/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-atomic/read_write_lock-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:15:43,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:15:43,877 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 04:15:43,891 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:15:43,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:15:43,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:15:43,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:15:43,893 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:15:43,893 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:15:43,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:15:43,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:15:43,894 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:15:43,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:15:43,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:15:43,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:15:43,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:15:43,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:15:43,895 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:15:43,895 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:15:43,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:15:43,896 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:15:43,898 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:15:43,899 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:15:43,899 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:15:43,899 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:15:43,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:15:43,899 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:15:43,900 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:15:43,900 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:15:43,900 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:15:43,900 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:15:43,901 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:15:43,901 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:15:43,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:15:44,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:15:44,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:15:44,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:15:44,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:15:44,116 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:15:44,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-11-30 04:15:45,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:15:45,343 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:15:45,345 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1.i [2023-11-30 04:15:45,353 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865805c8d/1964b38e3a1c44c58f1c26b89e1e8d86/FLAGb1a36caf8 [2023-11-30 04:15:45,362 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/865805c8d/1964b38e3a1c44c58f1c26b89e1e8d86 [2023-11-30 04:15:45,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:15:45,364 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:15:45,365 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:15:45,365 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:15:45,372 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:15:45,373 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b76e4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45, skipping insertion in model container [2023-11-30 04:15:45,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:15:45,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:15:45,645 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:15:45,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:15:45,705 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:15:45,727 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:15:45,735 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:15:45,735 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45 WrapperNode [2023-11-30 04:15:45,735 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:15:45,736 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:15:45,736 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:15:45,737 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:15:45,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,780 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 116 [2023-11-30 04:15:45,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:15:45,781 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:15:45,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:15:45,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:15:45,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,811 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,814 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,819 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:15:45,819 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:15:45,819 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:15:45,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:15:45,820 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (1/1) ... [2023-11-30 04:15:45,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:15:45,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:15:45,854 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 04:15:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:15:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:15:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:15:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:15:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-11-30 04:15:45,881 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-11-30 04:15:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:15:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:15:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:15:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:15:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:15:45,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:15:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-11-30 04:15:45,883 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-11-30 04:15:45,883 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 04:15:45,873 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 04:15:46,003 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:15:46,005 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:15:46,180 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:15:46,213 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:15:46,213 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 04:15:46,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:15:46 BoogieIcfgContainer [2023-11-30 04:15:46,214 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:15:46,216 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:15:46,216 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:15:46,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:15:46,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:15:45" (1/3) ... [2023-11-30 04:15:46,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ff779e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:15:46, skipping insertion in model container [2023-11-30 04:15:46,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:45" (2/3) ... [2023-11-30 04:15:46,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ff779e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:15:46, skipping insertion in model container [2023-11-30 04:15:46,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:15:46" (3/3) ... [2023-11-30 04:15:46,220 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2023-11-30 04:15:46,233 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:15:46,233 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-30 04:15:46,233 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:15:46,313 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 04:15:46,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 132 transitions, 292 flow [2023-11-30 04:15:46,378 INFO L124 PetriNetUnfolderBase]: 4/128 cut-off events. [2023-11-30 04:15:46,379 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-30 04:15:46,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 128 events. 4/128 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 191 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-11-30 04:15:46,383 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 132 transitions, 292 flow [2023-11-30 04:15:46,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 114 transitions, 249 flow [2023-11-30 04:15:46,396 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:15:46,400 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;@6a4b48ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:15:46,400 INFO L363 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-30 04:15:46,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:15:46,405 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-11-30 04:15:46,405 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:15:46,406 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:46,406 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:15:46,406 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 04:15:46,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:46,410 INFO L85 PathProgramCache]: Analyzing trace with hash 2070448961, now seen corresponding path program 1 times [2023-11-30 04:15:46,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:46,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896218408] [2023-11-30 04:15:46,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:46,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:46,771 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 04:15:46,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:46,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896218408] [2023-11-30 04:15:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896218408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:46,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:46,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:46,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299038824] [2023-11-30 04:15:46,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:46,779 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:46,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:46,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:46,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:46,806 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 132 [2023-11-30 04:15:46,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 114 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 04:15:46,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:46,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 132 [2023-11-30 04:15:46,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:47,057 INFO L124 PetriNetUnfolderBase]: 427/1358 cut-off events. [2023-11-30 04:15:47,057 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-11-30 04:15:47,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2119 conditions, 1358 events. 427/1358 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 9859 event pairs, 427 based on Foata normal form. 234/1447 useless extension candidates. Maximal degree in co-relation 1584. Up to 682 conditions per place. [2023-11-30 04:15:47,070 INFO L140 encePairwiseOnDemand]: 125/132 looper letters, 35 selfloop transitions, 1 changer transitions 1/104 dead transitions. [2023-11-30 04:15:47,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 104 transitions, 303 flow [2023-11-30 04:15:47,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:47,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-11-30 04:15:47,084 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7297979797979798 [2023-11-30 04:15:47,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-11-30 04:15:47,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-11-30 04:15:47,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:47,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-11-30 04:15:47,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 04:15:47,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:47,097 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:47,100 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -4 predicate places. [2023-11-30 04:15:47,100 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 303 flow [2023-11-30 04:15:47,100 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 04:15:47,100 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:47,101 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:15:47,101 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:15:47,101 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 04:15:47,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:47,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2070448962, now seen corresponding path program 1 times [2023-11-30 04:15:47,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:47,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456314016] [2023-11-30 04:15:47,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:47,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:47,353 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 04:15:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:47,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456314016] [2023-11-30 04:15:47,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456314016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:47,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:47,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:15:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475378722] [2023-11-30 04:15:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:47,356 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 04:15:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 04:15:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 04:15:47,357 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 132 [2023-11-30 04:15:47,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 04:15:47,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:47,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 132 [2023-11-30 04:15:47,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:47,550 INFO L124 PetriNetUnfolderBase]: 413/1246 cut-off events. [2023-11-30 04:15:47,550 INFO L125 PetriNetUnfolderBase]: For 245/287 co-relation queries the response was YES. [2023-11-30 04:15:47,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 1246 events. 413/1246 cut-off events. For 245/287 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 8733 event pairs, 413 based on Foata normal form. 0/1139 useless extension candidates. Maximal degree in co-relation 1735. Up to 678 conditions per place. [2023-11-30 04:15:47,559 INFO L140 encePairwiseOnDemand]: 129/132 looper letters, 39 selfloop transitions, 1 changer transitions 1/102 dead transitions. [2023-11-30 04:15:47,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 102 transitions, 377 flow [2023-11-30 04:15:47,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:47,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:47,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-30 04:15:47,561 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6843434343434344 [2023-11-30 04:15:47,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-30 04:15:47,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-30 04:15:47,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:47,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-30 04:15:47,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 04:15:47,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:47,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:47,565 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -4 predicate places. [2023-11-30 04:15:47,565 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 377 flow [2023-11-30 04:15:47,566 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 04:15:47,566 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:47,566 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] [2023-11-30 04:15:47,567 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:15:47,567 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 04:15:47,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:47,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1281532467, now seen corresponding path program 1 times [2023-11-30 04:15:47,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:47,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129371084] [2023-11-30 04:15:47,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:47,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:47,655 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 04:15:47,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:47,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129371084] [2023-11-30 04:15:47,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129371084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:47,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:47,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:47,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812189040] [2023-11-30 04:15:47,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:47,658 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:47,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:47,662 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 132 [2023-11-30 04:15:47,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 04:15:47,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:47,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 132 [2023-11-30 04:15:47,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:47,819 INFO L124 PetriNetUnfolderBase]: 379/1188 cut-off events. [2023-11-30 04:15:47,819 INFO L125 PetriNetUnfolderBase]: For 563/649 co-relation queries the response was YES. [2023-11-30 04:15:47,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3075 conditions, 1188 events. 379/1188 cut-off events. For 563/649 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8317 event pairs, 379 based on Foata normal form. 0/1101 useless extension candidates. Maximal degree in co-relation 2097. Up to 624 conditions per place. [2023-11-30 04:15:47,828 INFO L140 encePairwiseOnDemand]: 129/132 looper letters, 33 selfloop transitions, 1 changer transitions 1/100 dead transitions. [2023-11-30 04:15:47,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 100 transitions, 435 flow [2023-11-30 04:15:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-30 04:15:47,829 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7146464646464646 [2023-11-30 04:15:47,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-30 04:15:47,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-30 04:15:47,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:47,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-30 04:15:47,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 04:15:47,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:47,831 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:47,832 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -4 predicate places. [2023-11-30 04:15:47,832 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 435 flow [2023-11-30 04:15:47,832 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 04:15:47,832 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:47,833 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] [2023-11-30 04:15:47,833 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:15:47,833 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 04:15:47,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:47,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1281532466, now seen corresponding path program 1 times [2023-11-30 04:15:47,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707440400] [2023-11-30 04:15:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:47,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:47,957 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 04:15:47,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:47,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707440400] [2023-11-30 04:15:47,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707440400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:47,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:47,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:15:47,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514802781] [2023-11-30 04:15:47,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:47,958 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 04:15:47,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 04:15:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 04:15:47,962 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 132 [2023-11-30 04:15:47,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 04:15:47,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:47,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 132 [2023-11-30 04:15:47,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:48,088 INFO L124 PetriNetUnfolderBase]: 345/1130 cut-off events. [2023-11-30 04:15:48,089 INFO L125 PetriNetUnfolderBase]: For 966/1112 co-relation queries the response was YES. [2023-11-30 04:15:48,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3450 conditions, 1130 events. 345/1130 cut-off events. For 966/1112 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7874 event pairs, 345 based on Foata normal form. 19/1063 useless extension candidates. Maximal degree in co-relation 2473. Up to 570 conditions per place. [2023-11-30 04:15:48,097 INFO L140 encePairwiseOnDemand]: 129/132 looper letters, 35 selfloop transitions, 1 changer transitions 1/98 dead transitions. [2023-11-30 04:15:48,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 98 transitions, 497 flow [2023-11-30 04:15:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2023-11-30 04:15:48,098 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2023-11-30 04:15:48,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2023-11-30 04:15:48,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2023-11-30 04:15:48,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:48,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2023-11-30 04:15:48,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 04:15:48,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,101 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,102 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -4 predicate places. [2023-11-30 04:15:48,102 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 98 transitions, 497 flow [2023-11-30 04:15:48,102 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 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 04:15:48,102 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:48,102 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] [2023-11-30 04:15:48,102 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:15:48,102 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 04:15:48,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:48,103 INFO L85 PathProgramCache]: Analyzing trace with hash -982307733, now seen corresponding path program 1 times [2023-11-30 04:15:48,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:48,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566291380] [2023-11-30 04:15:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:48,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:48,167 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 04:15:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566291380] [2023-11-30 04:15:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566291380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:48,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181430882] [2023-11-30 04:15:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:48,168 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:48,169 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 132 [2023-11-30 04:15:48,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 98 transitions, 497 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 04:15:48,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:48,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 132 [2023-11-30 04:15:48,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:48,329 INFO L124 PetriNetUnfolderBase]: 331/1084 cut-off events. [2023-11-30 04:15:48,329 INFO L125 PetriNetUnfolderBase]: For 1447/1635 co-relation queries the response was YES. [2023-11-30 04:15:48,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3834 conditions, 1084 events. 331/1084 cut-off events. For 1447/1635 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7502 event pairs, 331 based on Foata normal form. 0/1012 useless extension candidates. Maximal degree in co-relation 2753. Up to 544 conditions per place. [2023-11-30 04:15:48,337 INFO L140 encePairwiseOnDemand]: 129/132 looper letters, 31 selfloop transitions, 1 changer transitions 1/96 dead transitions. [2023-11-30 04:15:48,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 96 transitions, 543 flow [2023-11-30 04:15:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:48,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 281 transitions. [2023-11-30 04:15:48,339 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7095959595959596 [2023-11-30 04:15:48,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 281 transitions. [2023-11-30 04:15:48,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 281 transitions. [2023-11-30 04:15:48,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:48,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 281 transitions. [2023-11-30 04:15:48,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 04:15:48,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,341 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -4 predicate places. [2023-11-30 04:15:48,341 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 96 transitions, 543 flow [2023-11-30 04:15:48,341 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 04:15:48,341 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:48,341 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] [2023-11-30 04:15:48,341 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:15:48,342 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 04:15:48,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:48,342 INFO L85 PathProgramCache]: Analyzing trace with hash -982307732, now seen corresponding path program 1 times [2023-11-30 04:15:48,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:48,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046160621] [2023-11-30 04:15:48,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:48,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:48,397 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 04:15:48,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:48,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046160621] [2023-11-30 04:15:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046160621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:48,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:48,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018935810] [2023-11-30 04:15:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:48,398 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:48,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:48,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:48,399 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 132 [2023-11-30 04:15:48,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 96 transitions, 543 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 04:15:48,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:48,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 132 [2023-11-30 04:15:48,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:48,509 INFO L124 PetriNetUnfolderBase]: 317/1038 cut-off events. [2023-11-30 04:15:48,509 INFO L125 PetriNetUnfolderBase]: For 2222/2516 co-relation queries the response was YES. [2023-11-30 04:15:48,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4189 conditions, 1038 events. 317/1038 cut-off events. For 2222/2516 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 7052 event pairs, 317 based on Foata normal form. 10/989 useless extension candidates. Maximal degree in co-relation 3019. Up to 518 conditions per place. [2023-11-30 04:15:48,517 INFO L140 encePairwiseOnDemand]: 129/132 looper letters, 28 selfloop transitions, 1 changer transitions 1/94 dead transitions. [2023-11-30 04:15:48,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 94 transitions, 587 flow [2023-11-30 04:15:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-11-30 04:15:48,519 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7323232323232324 [2023-11-30 04:15:48,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-11-30 04:15:48,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-11-30 04:15:48,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:48,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-11-30 04:15:48,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:48,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,522 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -4 predicate places. [2023-11-30 04:15:48,522 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 94 transitions, 587 flow [2023-11-30 04:15:48,523 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 04:15:48,523 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:48,523 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] [2023-11-30 04:15:48,523 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:15:48,523 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 04:15:48,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1269661119, now seen corresponding path program 1 times [2023-11-30 04:15:48,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:48,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152778788] [2023-11-30 04:15:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:48,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:48,574 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 04:15:48,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:48,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152778788] [2023-11-30 04:15:48,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152778788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:48,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:48,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430286034] [2023-11-30 04:15:48,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:48,577 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:48,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:48,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:48,579 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 132 [2023-11-30 04:15:48,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 94 transitions, 587 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 04:15:48,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:48,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 132 [2023-11-30 04:15:48,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:48,699 INFO L124 PetriNetUnfolderBase]: 295/977 cut-off events. [2023-11-30 04:15:48,699 INFO L125 PetriNetUnfolderBase]: For 2987/3335 co-relation queries the response was YES. [2023-11-30 04:15:48,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4407 conditions, 977 events. 295/977 cut-off events. For 2987/3335 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6523 event pairs, 295 based on Foata normal form. 9/933 useless extension candidates. Maximal degree in co-relation 3115. Up to 481 conditions per place. [2023-11-30 04:15:48,707 INFO L140 encePairwiseOnDemand]: 129/132 looper letters, 29 selfloop transitions, 1 changer transitions 1/92 dead transitions. [2023-11-30 04:15:48,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 92 transitions, 625 flow [2023-11-30 04:15:48,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:48,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:48,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 279 transitions. [2023-11-30 04:15:48,709 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2023-11-30 04:15:48,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 279 transitions. [2023-11-30 04:15:48,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 279 transitions. [2023-11-30 04:15:48,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:48,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 279 transitions. [2023-11-30 04:15:48,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:48,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,710 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,711 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -4 predicate places. [2023-11-30 04:15:48,712 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 92 transitions, 625 flow [2023-11-30 04:15:48,712 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 04:15:48,712 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:48,712 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] [2023-11-30 04:15:48,712 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:15:48,712 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 04:15:48,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1269661120, now seen corresponding path program 1 times [2023-11-30 04:15:48,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343294004] [2023-11-30 04:15:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:48,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:48,777 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 04:15:48,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:48,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343294004] [2023-11-30 04:15:48,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343294004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:48,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:48,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:48,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425749381] [2023-11-30 04:15:48,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:48,778 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:48,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:48,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:48,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:48,779 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 132 [2023-11-30 04:15:48,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 92 transitions, 625 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:48,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:48,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 132 [2023-11-30 04:15:48,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:48,887 INFO L124 PetriNetUnfolderBase]: 273/916 cut-off events. [2023-11-30 04:15:48,887 INFO L125 PetriNetUnfolderBase]: For 3572/3914 co-relation queries the response was YES. [2023-11-30 04:15:48,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 916 events. 273/916 cut-off events. For 3572/3914 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5984 event pairs, 273 based on Foata normal form. 9/878 useless extension candidates. Maximal degree in co-relation 3171. Up to 444 conditions per place. [2023-11-30 04:15:48,891 INFO L140 encePairwiseOnDemand]: 129/132 looper letters, 0 selfloop transitions, 0 changer transitions 90/90 dead transitions. [2023-11-30 04:15:48,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 90 transitions, 661 flow [2023-11-30 04:15:48,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:48,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2023-11-30 04:15:48,892 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7272727272727273 [2023-11-30 04:15:48,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 288 transitions. [2023-11-30 04:15:48,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 288 transitions. [2023-11-30 04:15:48,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:48,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 288 transitions. [2023-11-30 04:15:48,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 04:15:48,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:15:48,897 INFO L307 CegarLoopForPetriNet]: 123 programPoint places, -4 predicate places. [2023-11-30 04:15:48,897 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 90 transitions, 661 flow [2023-11-30 04:15:48,897 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:48,902 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/read_write_lock-1.i_BEv2_AllErrorsAtOnce [2023-11-30 04:15:48,922 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-30 04:15:48,923 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 20 remaining) [2023-11-30 04:15:48,924 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 20 remaining) [2023-11-30 04:15:48,924 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:15:48,925 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:15:48,927 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:15:48,927 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:15:48,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:15:48 BasicIcfg [2023-11-30 04:15:48,931 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:15:48,931 INFO L158 Benchmark]: Toolchain (without parser) took 3566.88ms. Allocated memory was 379.6MB in the beginning and 612.4MB in the end (delta: 232.8MB). Free memory was 319.4MB in the beginning and 286.5MB in the end (delta: 32.8MB). Peak memory consumption was 266.7MB. Max. memory is 16.0GB. [2023-11-30 04:15:48,931 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 379.6MB. Free memory is still 326.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:15:48,932 INFO L158 Benchmark]: CACSL2BoogieTranslator took 370.35ms. Allocated memory was 379.6MB in the beginning and 612.4MB in the end (delta: 232.8MB). Free memory was 319.1MB in the beginning and 581.9MB in the end (delta: -262.8MB). Peak memory consumption was 27.0MB. Max. memory is 16.0GB. [2023-11-30 04:15:48,932 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.93ms. Allocated memory is still 612.4MB. Free memory was 581.9MB in the beginning and 579.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:15:48,932 INFO L158 Benchmark]: Boogie Preprocessor took 38.20ms. Allocated memory is still 612.4MB. Free memory was 579.4MB in the beginning and 578.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:15:48,932 INFO L158 Benchmark]: RCFGBuilder took 395.17ms. Allocated memory is still 612.4MB. Free memory was 578.1MB in the beginning and 559.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-30 04:15:48,932 INFO L158 Benchmark]: TraceAbstraction took 2714.86ms. Allocated memory is still 612.4MB. Free memory was 558.5MB in the beginning and 286.5MB in the end (delta: 271.9MB). Peak memory consumption was 271.2MB. Max. memory is 16.0GB. [2023-11-30 04:15:48,933 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 379.6MB. Free memory is still 326.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 370.35ms. Allocated memory was 379.6MB in the beginning and 612.4MB in the end (delta: 232.8MB). Free memory was 319.1MB in the beginning and 581.9MB in the end (delta: -262.8MB). Peak memory consumption was 27.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.93ms. Allocated memory is still 612.4MB. Free memory was 581.9MB in the beginning and 579.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.20ms. Allocated memory is still 612.4MB. Free memory was 579.4MB in the beginning and 578.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 395.17ms. Allocated memory is still 612.4MB. Free memory was 578.1MB in the beginning and 559.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 2714.86ms. Allocated memory is still 612.4MB. Free memory was 558.5MB in the beginning and 286.5MB in the end (delta: 271.9MB). Peak memory consumption was 271.2MB. 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 - 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 7 procedures, 157 locations, 20 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: 2.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 248 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 248 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 262 IncrementalHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 50 mSDtfsCounter, 262 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=661occurred in iteration=8, InterpolantAutomatonStates: 24, 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, 0.9s InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 04:15:48,947 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...