/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/goblint-regression/13-privatized_27-multiple-protecting2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:13:00,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:13:00,921 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 21:13:00,945 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:13:00,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:13:00,946 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:13:00,947 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:13:00,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:13:00,947 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:13:00,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:13:00,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:13:00,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:13:00,951 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:13:00,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:13:00,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:13:00,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:13:00,952 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:13:00,952 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:13:00,953 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:13:00,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:13:00,953 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:13:00,953 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:13:00,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:13:00,954 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:13:00,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:13:00,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:13:00,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:13:00,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:13:00,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:13:00,955 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:13:00,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:13:00,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:13:00,956 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:13:00,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:13:01,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:13:01,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:13:01,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:13:01,167 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:13:01,167 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:13:01,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-12-05 21:13:02,161 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:13:02,398 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:13:02,406 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-12-05 21:13:02,416 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a92a737c/9ee83049a9934cf78d5a48b9152b70c0/FLAGe48df5f42 [2023-12-05 21:13:02,425 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a92a737c/9ee83049a9934cf78d5a48b9152b70c0 [2023-12-05 21:13:02,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:13:02,428 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:13:02,429 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:13:02,429 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:13:02,432 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:13:02,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4243fc7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02, skipping insertion in model container [2023-12-05 21:13:02,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:13:02,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:13:02,703 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:13:02,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:13:02,800 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:13:02,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02 WrapperNode [2023-12-05 21:13:02,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:13:02,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:13:02,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:13:02,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:13:02,806 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,837 INFO L138 Inliner]: procedures = 164, calls = 65, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 133 [2023-12-05 21:13:02,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:13:02,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:13:02,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:13:02,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:13:02,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,849 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,856 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,857 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,858 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:13:02,864 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:13:02,864 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:13:02,864 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:13:02,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (1/1) ... [2023-12-05 21:13:02,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:13:02,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:13:02,899 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 21:13:02,918 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 21:13:02,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 21:13:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-12-05 21:13:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-12-05 21:13:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:13:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 21:13:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:13:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:13:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-05 21:13:02,928 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-05 21:13:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:13:02,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:13:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 21:13:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:13:02,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:13:02,930 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 21:13:03,025 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:13:03,028 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:13:03,285 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:13:03,314 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:13:03,314 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:13:03,316 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:13:03 BoogieIcfgContainer [2023-12-05 21:13:03,316 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:13:03,317 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:13:03,317 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:13:03,319 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:13:03,319 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:13:02" (1/3) ... [2023-12-05 21:13:03,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f63c6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:13:03, skipping insertion in model container [2023-12-05 21:13:03,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:13:02" (2/3) ... [2023-12-05 21:13:03,320 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f63c6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:13:03, skipping insertion in model container [2023-12-05 21:13:03,320 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:13:03" (3/3) ... [2023-12-05 21:13:03,321 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-12-05 21:13:03,332 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:13:03,332 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 21:13:03,332 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:13:03,373 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-05 21:13:03,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 191 transitions, 396 flow [2023-12-05 21:13:03,509 INFO L124 PetriNetUnfolderBase]: 8/189 cut-off events. [2023-12-05 21:13:03,509 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:13:03,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 189 events. 8/189 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 225 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 137. Up to 2 conditions per place. [2023-12-05 21:13:03,514 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 191 transitions, 396 flow [2023-12-05 21:13:03,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 178 transitions, 365 flow [2023-12-05 21:13:03,536 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:13:03,540 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;@4d95454c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:13:03,540 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-12-05 21:13:03,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:13:03,546 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2023-12-05 21:13:03,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:13:03,546 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:03,546 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] [2023-12-05 21:13:03,547 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)] === [2023-12-05 21:13:03,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1939100297, now seen corresponding path program 1 times [2023-12-05 21:13:03,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:03,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436204736] [2023-12-05 21:13:03,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:03,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:03,910 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 21:13:03,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:03,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436204736] [2023-12-05 21:13:03,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436204736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:13:03,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:13:03,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:13:03,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124386522] [2023-12-05 21:13:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:13:03,921 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:13:03,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:03,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:13:03,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:13:03,950 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 191 [2023-12-05 21:13:03,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 178 transitions, 365 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 21:13:03,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:03,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 191 [2023-12-05 21:13:03,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:13:04,453 INFO L124 PetriNetUnfolderBase]: 1242/3938 cut-off events. [2023-12-05 21:13:04,453 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-12-05 21:13:04,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5988 conditions, 3938 events. 1242/3938 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 32248 event pairs, 1242 based on Foata normal form. 280/4069 useless extension candidates. Maximal degree in co-relation 5859. Up to 2016 conditions per place. [2023-12-05 21:13:04,480 INFO L140 encePairwiseOnDemand]: 180/191 looper letters, 42 selfloop transitions, 1 changer transitions 0/156 dead transitions. [2023-12-05 21:13:04,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 156 transitions, 407 flow [2023-12-05 21:13:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:13:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:13:04,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-12-05 21:13:04,493 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7626527050610821 [2023-12-05 21:13:04,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-12-05 21:13:04,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-12-05 21:13:04,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:13:04,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-12-05 21:13:04,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 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 21:13:04,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 21:13:04,564 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 21:13:04,566 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -12 predicate places. [2023-12-05 21:13:04,566 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 156 transitions, 407 flow [2023-12-05 21:13:04,566 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 21:13:04,566 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:04,567 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] [2023-12-05 21:13:04,567 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:13:04,568 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)] === [2023-12-05 21:13:04,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:04,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1939100298, now seen corresponding path program 1 times [2023-12-05 21:13:04,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:04,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121553153] [2023-12-05 21:13:04,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:04,745 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 21:13:04,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:04,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121553153] [2023-12-05 21:13:04,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121553153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:13:04,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:13:04,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 21:13:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075073946] [2023-12-05 21:13:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:13:04,748 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 21:13:04,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:04,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 21:13:04,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 21:13:04,750 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 191 [2023-12-05 21:13:04,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 156 transitions, 407 flow. Second operand has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:04,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:04,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 191 [2023-12-05 21:13:04,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:13:05,114 INFO L124 PetriNetUnfolderBase]: 1170/3738 cut-off events. [2023-12-05 21:13:05,114 INFO L125 PetriNetUnfolderBase]: For 720/912 co-relation queries the response was YES. [2023-12-05 21:13:05,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 3738 events. 1170/3738 cut-off events. For 720/912 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 30529 event pairs, 1170 based on Foata normal form. 0/3638 useless extension candidates. Maximal degree in co-relation 7392. Up to 1908 conditions per place. [2023-12-05 21:13:05,163 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 42 selfloop transitions, 1 changer transitions 0/154 dead transitions. [2023-12-05 21:13:05,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 154 transitions, 485 flow [2023-12-05 21:13:05,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:13:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:13:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-12-05 21:13:05,165 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7382198952879581 [2023-12-05 21:13:05,165 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-12-05 21:13:05,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-12-05 21:13:05,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:13:05,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-12-05 21:13:05,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 21:13:05,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 21:13:05,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 21:13:05,170 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -12 predicate places. [2023-12-05 21:13:05,170 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 154 transitions, 485 flow [2023-12-05 21:13:05,171 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.5) internal successors, (514), 4 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:05,171 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:05,171 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] [2023-12-05 21:13:05,171 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:13:05,171 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:13:05,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:05,172 INFO L85 PathProgramCache]: Analyzing trace with hash 499760211, now seen corresponding path program 1 times [2023-12-05 21:13:05,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:05,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815194136] [2023-12-05 21:13:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:05,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:05,297 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 21:13:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815194136] [2023-12-05 21:13:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815194136] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:13:05,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:13:05,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:13:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193791227] [2023-12-05 21:13:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:13:05,300 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:13:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:13:05,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:13:05,303 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 191 [2023-12-05 21:13:05,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 154 transitions, 485 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 21:13:05,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:05,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 191 [2023-12-05 21:13:05,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:13:05,694 INFO L124 PetriNetUnfolderBase]: 1158/3698 cut-off events. [2023-12-05 21:13:05,694 INFO L125 PetriNetUnfolderBase]: For 2083/2469 co-relation queries the response was YES. [2023-12-05 21:13:05,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9393 conditions, 3698 events. 1158/3698 cut-off events. For 2083/2469 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 30131 event pairs, 1158 based on Foata normal form. 13/3612 useless extension candidates. Maximal degree in co-relation 9198. Up to 1882 conditions per place. [2023-12-05 21:13:05,720 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 39 selfloop transitions, 1 changer transitions 0/152 dead transitions. [2023-12-05 21:13:05,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 152 transitions, 557 flow [2023-12-05 21:13:05,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:13:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:13:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-12-05 21:13:05,722 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7539267015706806 [2023-12-05 21:13:05,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-12-05 21:13:05,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-12-05 21:13:05,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:13:05,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-12-05 21:13:05,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:13:05,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 21:13:05,724 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 21:13:05,725 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -12 predicate places. [2023-12-05 21:13:05,726 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 152 transitions, 557 flow [2023-12-05 21:13:05,726 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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 21:13:05,726 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:13:05,726 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] [2023-12-05 21:13:05,726 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:13:05,726 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-12-05 21:13:05,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:13:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash 499760210, now seen corresponding path program 1 times [2023-12-05 21:13:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:13:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316975025] [2023-12-05 21:13:05,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:13:05,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:13:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:13:05,776 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 21:13:05,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:13:05,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316975025] [2023-12-05 21:13:05,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316975025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:13:05,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:13:05,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:13:05,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278280912] [2023-12-05 21:13:05,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:13:05,780 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:13:05,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:13:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:13:05,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:13:05,782 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 191 [2023-12-05 21:13:05,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 152 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 21:13:05,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:13:05,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 191 [2023-12-05 21:13:05,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:13:06,111 INFO L124 PetriNetUnfolderBase]: 1146/3658 cut-off events. [2023-12-05 21:13:06,111 INFO L125 PetriNetUnfolderBase]: For 4093/4669 co-relation queries the response was YES. [2023-12-05 21:13:06,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11139 conditions, 3658 events. 1146/3658 cut-off events. For 4093/4669 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 29915 event pairs, 1146 based on Foata normal form. 7/3573 useless extension candidates. Maximal degree in co-relation 10971. Up to 1856 conditions per place. [2023-12-05 21:13:06,122 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2023-12-05 21:13:06,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 150 transitions, 619 flow [2023-12-05 21:13:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:13:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:13:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-12-05 21:13:06,123 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7417102966841187 [2023-12-05 21:13:06,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-12-05 21:13:06,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-12-05 21:13:06,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:13:06,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-12-05 21:13:06,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 21:13:06,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 21:13:06,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 21:13:06,126 INFO L308 CegarLoopForPetriNet]: 177 programPoint places, -12 predicate places. [2023-12-05 21:13:06,126 INFO L500 AbstractCegarLoop]: Abstraction has has 165 places, 150 transitions, 619 flow [2023-12-05 21:13:06,127 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 21:13:06,132 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/13-privatized_27-multiple-protecting2_true.i_BEv2_AllErrorsAtOnce [2023-12-05 21:13:06,161 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-12-05 21:13:06,161 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-12-05 21:13:06,161 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-12-05 21:13:06,161 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-12-05 21:13:06,162 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-12-05 21:13:06,162 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-12-05 21:13:06,162 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-12-05 21:13:06,162 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-12-05 21:13:06,162 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-12-05 21:13:06,162 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-12-05 21:13:06,162 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:13:06,163 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-12-05 21:13:06,165 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:13:06,165 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:13:06,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:13:06 BasicIcfg [2023-12-05 21:13:06,169 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:13:06,170 INFO L158 Benchmark]: Toolchain (without parser) took 3741.91ms. Allocated memory was 170.9MB in the beginning and 400.6MB in the end (delta: 229.6MB). Free memory was 133.3MB in the beginning and 136.1MB in the end (delta: -2.8MB). Peak memory consumption was 238.2MB. Max. memory is 8.0GB. [2023-12-05 21:13:06,170 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 170.9MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:13:06,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.30ms. Allocated memory is still 170.9MB. Free memory was 133.3MB in the beginning and 112.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-05 21:13:06,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.96ms. Allocated memory is still 170.9MB. Free memory was 112.7MB in the beginning and 110.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:13:06,171 INFO L158 Benchmark]: Boogie Preprocessor took 21.80ms. Allocated memory is still 170.9MB. Free memory was 110.6MB in the beginning and 109.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:13:06,171 INFO L158 Benchmark]: RCFGBuilder took 451.73ms. Allocated memory is still 170.9MB. Free memory was 109.0MB in the beginning and 83.4MB in the end (delta: 25.6MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-05 21:13:06,171 INFO L158 Benchmark]: TraceAbstraction took 2852.34ms. Allocated memory was 170.9MB in the beginning and 400.6MB in the end (delta: 229.6MB). Free memory was 82.9MB in the beginning and 136.1MB in the end (delta: -53.2MB). Peak memory consumption was 187.8MB. Max. memory is 8.0GB. [2023-12-05 21:13:06,172 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 170.9MB. Free memory is still 128.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 372.30ms. Allocated memory is still 170.9MB. Free memory was 133.3MB in the beginning and 112.7MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.96ms. Allocated memory is still 170.9MB. Free memory was 112.7MB in the beginning and 110.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.80ms. Allocated memory is still 170.9MB. Free memory was 110.6MB in the beginning and 109.0MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 451.73ms. Allocated memory is still 170.9MB. Free memory was 109.0MB in the beginning and 83.4MB in the end (delta: 25.6MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 2852.34ms. Allocated memory was 170.9MB in the beginning and 400.6MB in the end (delta: 229.6MB). Free memory was 82.9MB in the beginning and 136.1MB in the end (delta: -53.2MB). Peak memory consumption was 187.8MB. 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 - 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, 230 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 160 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 160 IncrementalHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 33 mSDtfsCounter, 160 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=619occurred 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, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 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! [2023-12-05 21:13:06,204 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...