/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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-deagle/arithmetic_prog_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:41:18,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:41:18,481 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 05:41:18,503 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:41:18,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:41:18,504 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:41:18,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:41:18,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:41:18,505 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:41:18,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:41:18,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:41:18,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:41:18,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:41:18,510 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:41:18,510 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:41:18,510 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:41:18,510 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:41:18,510 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:41:18,510 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:41:18,511 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:41:18,511 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:41:18,511 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:41:18,512 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:41:18,512 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:41:18,512 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:41:18,512 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:41:18,512 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:41:18,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:41:18,512 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:41:18,513 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:41:18,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:41:18,513 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:41:18,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:41:18,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:41:18,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:41:18,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:41:18,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:41:18,694 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:41:18,694 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:41:18,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-11-30 05:41:19,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:41:19,837 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:41:19,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i [2023-11-30 05:41:19,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94bf69daa/77b3db28344b4fc3822e94685321c325/FLAGc298f83b1 [2023-11-30 05:41:19,863 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94bf69daa/77b3db28344b4fc3822e94685321c325 [2023-11-30 05:41:19,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:41:19,865 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:41:19,866 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:41:19,866 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:41:19,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:41:19,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:41:19" (1/1) ... [2023-11-30 05:41:19,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f023f47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:19, skipping insertion in model container [2023-11-30 05:41:19,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:41:19" (1/1) ... [2023-11-30 05:41:19,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:41:20,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:41:20,221 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:41:20,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:41:20,309 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:41:20,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20 WrapperNode [2023-11-30 05:41:20,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:41:20,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:41:20,311 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:41:20,311 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:41:20,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,364 INFO L138 Inliner]: procedures = 244, calls = 55, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-11-30 05:41:20,364 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:41:20,365 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:41:20,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:41:20,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:41:20,371 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,388 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,392 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,401 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,403 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,405 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:41:20,406 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:41:20,406 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:41:20,406 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:41:20,406 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (1/1) ... [2023-11-30 05:41:20,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:41:20,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:41:20,452 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) [2023-11-30 05:41:20,488 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 [2023-11-30 05:41:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:41:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:41:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-30 05:41:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 05:41:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:41:20,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:41:20,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:41:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:41:20,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:41:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:41:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 05:41:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:41:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:41:20,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:41:20,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:41:20,506 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 05:41:20,601 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:41:20,602 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:41:20,786 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:41:20,831 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:41:20,831 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-30 05:41:20,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:41:20 BoogieIcfgContainer [2023-11-30 05:41:20,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:41:20,833 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:41:20,833 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:41:20,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:41:20,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:41:19" (1/3) ... [2023-11-30 05:41:20,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d4d27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:41:20, skipping insertion in model container [2023-11-30 05:41:20,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:41:20" (2/3) ... [2023-11-30 05:41:20,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d4d27c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:41:20, skipping insertion in model container [2023-11-30 05:41:20,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:41:20" (3/3) ... [2023-11-30 05:41:20,837 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2023-11-30 05:41:20,848 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:41:20,848 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-30 05:41:20,848 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:41:20,906 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 05:41:20,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 147 transitions, 308 flow [2023-11-30 05:41:20,961 INFO L124 PetriNetUnfolderBase]: 11/145 cut-off events. [2023-11-30 05:41:20,961 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 05:41:20,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 11/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 209 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-11-30 05:41:20,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 147 transitions, 308 flow [2023-11-30 05:41:20,969 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 124 transitions, 257 flow [2023-11-30 05:41:20,974 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:41:20,979 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;@3d940dfd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:41:20,979 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-30 05:41:20,991 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:41:20,991 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2023-11-30 05:41:20,991 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:41:20,991 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:20,991 INFO L232 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] [2023-11-30 05:41:20,992 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:41:20,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:20,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1177465796, now seen corresponding path program 1 times [2023-11-30 05:41:21,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:21,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722590102] [2023-11-30 05:41:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:21,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:21,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:21,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722590102] [2023-11-30 05:41:21,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722590102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:21,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:21,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:41:21,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556517102] [2023-11-30 05:41:21,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:21,311 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:41:21,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:21,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:41:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:41:21,331 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 147 [2023-11-30 05:41:21,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 124 transitions, 257 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-11-30 05:41:21,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:21,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 147 [2023-11-30 05:41:21,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:21,439 INFO L124 PetriNetUnfolderBase]: 192/634 cut-off events. [2023-11-30 05:41:21,439 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-30 05:41:21,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 634 events. 192/634 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3643 event pairs, 120 based on Foata normal form. 92/621 useless extension candidates. Maximal degree in co-relation 780. Up to 291 conditions per place. [2023-11-30 05:41:21,446 INFO L140 encePairwiseOnDemand]: 140/147 looper letters, 27 selfloop transitions, 1 changer transitions 0/118 dead transitions. [2023-11-30 05:41:21,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 118 transitions, 301 flow [2023-11-30 05:41:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:21,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-11-30 05:41:21,460 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7913832199546486 [2023-11-30 05:41:21,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-11-30 05:41:21,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-11-30 05:41:21,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:21,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-11-30 05:41:21,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 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) [2023-11-30 05:41:21,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 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) [2023-11-30 05:41:21,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 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) [2023-11-30 05:41:21,475 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-11-30 05:41:21,475 INFO L500 AbstractCegarLoop]: Abstraction has has 123 places, 118 transitions, 301 flow [2023-11-30 05:41:21,475 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-11-30 05:41:21,476 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:21,476 INFO L232 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] [2023-11-30 05:41:21,476 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:41:21,476 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:41:21,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:21,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1177465797, now seen corresponding path program 1 times [2023-11-30 05:41:21,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:21,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276185981] [2023-11-30 05:41:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:21,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:21,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:21,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:21,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276185981] [2023-11-30 05:41:21,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276185981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:21,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:21,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:41:21,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824817644] [2023-11-30 05:41:21,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:21,705 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:41:21,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:21,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:41:21,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:41:21,707 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 147 [2023-11-30 05:41:21,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 118 transitions, 301 flow. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 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) [2023-11-30 05:41:21,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:21,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 147 [2023-11-30 05:41:21,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:21,807 INFO L124 PetriNetUnfolderBase]: 144/533 cut-off events. [2023-11-30 05:41:21,807 INFO L125 PetriNetUnfolderBase]: For 106/174 co-relation queries the response was YES. [2023-11-30 05:41:21,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 533 events. 144/533 cut-off events. For 106/174 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2890 event pairs, 88 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 765. Up to 227 conditions per place. [2023-11-30 05:41:21,812 INFO L140 encePairwiseOnDemand]: 144/147 looper letters, 27 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-11-30 05:41:21,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 116 transitions, 349 flow [2023-11-30 05:41:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-11-30 05:41:21,814 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7687074829931972 [2023-11-30 05:41:21,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-11-30 05:41:21,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-11-30 05:41:21,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:21,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-11-30 05:41:21,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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) [2023-11-30 05:41:21,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 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) [2023-11-30 05:41:21,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 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) [2023-11-30 05:41:21,819 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-11-30 05:41:21,819 INFO L500 AbstractCegarLoop]: Abstraction has has 123 places, 116 transitions, 349 flow [2023-11-30 05:41:21,819 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 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) [2023-11-30 05:41:21,819 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:21,819 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:21,819 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:41:21,820 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:41:21,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:21,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1644747069, now seen corresponding path program 1 times [2023-11-30 05:41:21,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:21,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728514132] [2023-11-30 05:41:21,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:21,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:21,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728514132] [2023-11-30 05:41:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728514132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:21,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:21,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:41:21,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986365014] [2023-11-30 05:41:21,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:21,898 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:41:21,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:21,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:41:21,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:41:21,902 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 147 [2023-11-30 05:41:21,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 116 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2023-11-30 05:41:21,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:21,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 147 [2023-11-30 05:41:21,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:21,980 INFO L124 PetriNetUnfolderBase]: 132/496 cut-off events. [2023-11-30 05:41:21,983 INFO L125 PetriNetUnfolderBase]: For 279/410 co-relation queries the response was YES. [2023-11-30 05:41:21,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1145 conditions, 496 events. 132/496 cut-off events. For 279/410 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2601 event pairs, 80 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 893. Up to 205 conditions per place. [2023-11-30 05:41:21,986 INFO L140 encePairwiseOnDemand]: 144/147 looper letters, 25 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-11-30 05:41:21,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 389 flow [2023-11-30 05:41:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:21,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:21,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-11-30 05:41:21,987 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7777777777777778 [2023-11-30 05:41:21,987 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-11-30 05:41:21,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-11-30 05:41:21,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:21,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-11-30 05:41:21,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2023-11-30 05:41:21,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 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) [2023-11-30 05:41:21,990 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 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) [2023-11-30 05:41:21,991 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-11-30 05:41:21,991 INFO L500 AbstractCegarLoop]: Abstraction has has 123 places, 114 transitions, 389 flow [2023-11-30 05:41:21,991 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2023-11-30 05:41:21,991 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:41:21,991 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:41:21,991 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:41:21,992 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:41:21,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:41:21,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1644747068, now seen corresponding path program 1 times [2023-11-30 05:41:21,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:41:21,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149946427] [2023-11-30 05:41:21,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:41:21,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:41:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:41:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:41:22,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:41:22,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149946427] [2023-11-30 05:41:22,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149946427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:41:22,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:41:22,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:41:22,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332870637] [2023-11-30 05:41:22,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:41:22,090 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:41:22,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:41:22,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:41:22,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:41:22,092 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 147 [2023-11-30 05:41:22,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 114 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2023-11-30 05:41:22,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:41:22,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 147 [2023-11-30 05:41:22,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:41:22,191 INFO L124 PetriNetUnfolderBase]: 120/459 cut-off events. [2023-11-30 05:41:22,191 INFO L125 PetriNetUnfolderBase]: For 512/702 co-relation queries the response was YES. [2023-11-30 05:41:22,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 459 events. 120/459 cut-off events. For 512/702 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2306 event pairs, 72 based on Foata normal form. 9/422 useless extension candidates. Maximal degree in co-relation 1004. Up to 183 conditions per place. [2023-11-30 05:41:22,193 INFO L140 encePairwiseOnDemand]: 144/147 looper letters, 0 selfloop transitions, 0 changer transitions 112/112 dead transitions. [2023-11-30 05:41:22,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 112 transitions, 423 flow [2023-11-30 05:41:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:41:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:41:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2023-11-30 05:41:22,194 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7845804988662132 [2023-11-30 05:41:22,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 346 transitions. [2023-11-30 05:41:22,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 346 transitions. [2023-11-30 05:41:22,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:41:22,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 346 transitions. [2023-11-30 05:41:22,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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) [2023-11-30 05:41:22,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 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) [2023-11-30 05:41:22,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 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) [2023-11-30 05:41:22,197 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, 0 predicate places. [2023-11-30 05:41:22,197 INFO L500 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 423 flow [2023-11-30 05:41:22,199 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2023-11-30 05:41:22,205 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/arithmetic_prog_bad.i_BEv2_AllErrorsAtOnce [2023-11-30 05:41:22,230 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-30 05:41:22,230 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-30 05:41:22,230 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-30 05:41:22,230 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-11-30 05:41:22,230 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-30 05:41:22,231 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-11-30 05:41:22,231 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-30 05:41:22,231 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-30 05:41:22,231 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-11-30 05:41:22,231 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-30 05:41:22,231 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:41:22,231 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-30 05:41:22,233 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:41:22,233 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:41:22,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:41:22 BasicIcfg [2023-11-30 05:41:22,240 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:41:22,241 INFO L158 Benchmark]: Toolchain (without parser) took 2375.10ms. Allocated memory is still 731.9MB. Free memory was 682.4MB in the beginning and 674.1MB in the end (delta: 8.2MB). Peak memory consumption was 145.6MB. Max. memory is 16.0GB. [2023-11-30 05:41:22,241 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 392.2MB. Free memory is still 337.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:41:22,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.17ms. Allocated memory is still 731.9MB. Free memory was 682.4MB in the beginning and 655.4MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-11-30 05:41:22,241 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.10ms. Allocated memory is still 731.9MB. Free memory was 655.4MB in the beginning and 653.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:41:22,244 INFO L158 Benchmark]: Boogie Preprocessor took 40.52ms. Allocated memory is still 731.9MB. Free memory was 653.1MB in the beginning and 651.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:41:22,246 INFO L158 Benchmark]: RCFGBuilder took 426.62ms. Allocated memory is still 731.9MB. Free memory was 651.0MB in the beginning and 691.4MB in the end (delta: -40.4MB). Peak memory consumption was 24.7MB. Max. memory is 16.0GB. [2023-11-30 05:41:22,246 INFO L158 Benchmark]: TraceAbstraction took 1406.52ms. Allocated memory is still 731.9MB. Free memory was 690.3MB in the beginning and 674.1MB in the end (delta: 16.2MB). Peak memory consumption was 152.4MB. Max. memory is 16.0GB. [2023-11-30 05:41:22,249 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 392.2MB. Free memory is still 337.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 444.17ms. Allocated memory is still 731.9MB. Free memory was 682.4MB in the beginning and 655.4MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.10ms. Allocated memory is still 731.9MB. Free memory was 655.4MB in the beginning and 653.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.52ms. Allocated memory is still 731.9MB. Free memory was 653.1MB in the beginning and 651.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 426.62ms. Allocated memory is still 731.9MB. Free memory was 651.0MB in the beginning and 691.4MB in the end (delta: -40.4MB). Peak memory consumption was 24.7MB. Max. memory is 16.0GB. * TraceAbstraction took 1406.52ms. Allocated memory is still 731.9MB. Free memory was 690.3MB in the beginning and 674.1MB in the end (delta: 16.2MB). Peak memory consumption was 152.4MB. Max. memory is 16.0GB. * 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 - 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 5 procedures, 186 locations, 10 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: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 66 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 33 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=423occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 0.5s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 05:41:22,264 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...