/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 20:59:36,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 20:59:36,469 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 20:59:36,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 20:59:36,503 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 20:59:36,503 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 20:59:36,504 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 20:59:36,504 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 20:59:36,505 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 20:59:36,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 20:59:36,509 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 20:59:36,509 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 20:59:36,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 20:59:36,511 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 20:59:36,511 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 20:59:36,511 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 20:59:36,511 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 20:59:36,511 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 20:59:36,512 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 20:59:36,512 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 20:59:36,512 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 20:59:36,513 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 20:59:36,513 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 20:59:36,513 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 20:59:36,514 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 20:59:36,514 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 20:59:36,514 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 20:59:36,514 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 20:59:36,515 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 20:59:36,515 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 20:59:36,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 20:59:36,516 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 20:59:36,516 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 20:59:36,516 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 20:59:36,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 20:59:36,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 20:59:36,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 20:59:36,768 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 20:59:36,768 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 20:59:36,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2023-12-05 20:59:37,868 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 20:59:38,103 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 20:59:38,104 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2023-12-05 20:59:38,125 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d68cef4bf/1b8fac07a41b4992aa41d748cc086532/FLAGa63159022 [2023-12-05 20:59:38,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d68cef4bf/1b8fac07a41b4992aa41d748cc086532 [2023-12-05 20:59:38,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 20:59:38,140 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 20:59:38,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 20:59:38,141 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 20:59:38,144 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 20:59:38,145 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6c6496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38, skipping insertion in model container [2023-12-05 20:59:38,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,185 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 20:59:38,477 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 20:59:38,497 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 20:59:38,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 20:59:38,569 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 20:59:38,570 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 20:59:38,576 INFO L206 MainTranslator]: Completed translation [2023-12-05 20:59:38,577 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38 WrapperNode [2023-12-05 20:59:38,577 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 20:59:38,578 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 20:59:38,578 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 20:59:38,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 20:59:38,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,641 INFO L138 Inliner]: procedures = 166, calls = 55, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 109 [2023-12-05 20:59:38,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 20:59:38,642 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 20:59:38,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 20:59:38,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 20:59:38,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,653 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 20:59:38,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 20:59:38,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 20:59:38,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 20:59:38,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (1/1) ... [2023-12-05 20:59:38,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 20:59:38,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 20:59:38,707 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 20:59:38,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 20:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2023-12-05 20:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-05 20:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 20:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2023-12-05 20:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 20:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 20:59:38,727 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2023-12-05 20:59:38,727 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2023-12-05 20:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 20:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2023-12-05 20:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 20:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 20:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 20:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 20:59:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 20:59:38,728 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2023-12-05 20:59:38,728 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2023-12-05 20:59:38,730 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 20:59:38,873 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 20:59:38,875 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 20:59:39,196 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 20:59:39,231 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 20:59:39,231 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 20:59:39,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:59:39 BoogieIcfgContainer [2023-12-05 20:59:39,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 20:59:39,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 20:59:39,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 20:59:39,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 20:59:39,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 08:59:38" (1/3) ... [2023-12-05 20:59:39,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584e1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:59:39, skipping insertion in model container [2023-12-05 20:59:39,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 08:59:38" (2/3) ... [2023-12-05 20:59:39,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@584e1520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 08:59:39, skipping insertion in model container [2023-12-05 20:59:39,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 08:59:39" (3/3) ... [2023-12-05 20:59:39,246 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2023-12-05 20:59:39,282 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 20:59:39,282 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-12-05 20:59:39,283 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 20:59:39,374 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-05 20:59:39,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 151 transitions, 330 flow [2023-12-05 20:59:39,477 INFO L124 PetriNetUnfolderBase]: 4/147 cut-off events. [2023-12-05 20:59:39,477 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-12-05 20:59:39,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 147 events. 4/147 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-12-05 20:59:39,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 151 transitions, 330 flow [2023-12-05 20:59:39,489 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 133 transitions, 287 flow [2023-12-05 20:59:39,499 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 20:59:39,505 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;@45934607, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 20:59:39,505 INFO L363 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-12-05 20:59:39,511 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 20:59:39,511 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-12-05 20:59:39,512 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 20:59:39,512 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:59:39,512 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:59:39,513 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)] === [2023-12-05 20:59:39,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:59:39,518 INFO L85 PathProgramCache]: Analyzing trace with hash 12647958, now seen corresponding path program 1 times [2023-12-05 20:59:39,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:59:39,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654246034] [2023-12-05 20:59:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:59:39,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:59:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:59:40,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:59:40,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:59:40,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654246034] [2023-12-05 20:59:40,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654246034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:59:40,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:59:40,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 20:59:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288383848] [2023-12-05 20:59:40,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:59:40,080 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 20:59:40,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:59:40,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 20:59:40,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 20:59:40,130 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 151 [2023-12-05 20:59:40,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 133 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:40,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:59:40,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 151 [2023-12-05 20:59:40,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:59:40,701 INFO L124 PetriNetUnfolderBase]: 976/2333 cut-off events. [2023-12-05 20:59:40,701 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-12-05 20:59:40,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3922 conditions, 2333 events. 976/2333 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 17080 event pairs, 976 based on Foata normal form. 369/2423 useless extension candidates. Maximal degree in co-relation 3111. Up to 1459 conditions per place. [2023-12-05 20:59:40,734 INFO L140 encePairwiseOnDemand]: 144/151 looper letters, 38 selfloop transitions, 1 changer transitions 1/123 dead transitions. [2023-12-05 20:59:40,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 123 transitions, 347 flow [2023-12-05 20:59:40,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:59:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:59:40,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-12-05 20:59:40,751 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7505518763796909 [2023-12-05 20:59:40,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-12-05 20:59:40,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-12-05 20:59:40,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:59:40,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-12-05 20:59:40,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:40,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:40,767 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:40,771 INFO L308 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2023-12-05 20:59:40,771 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 123 transitions, 347 flow [2023-12-05 20:59:40,772 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:40,772 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:59:40,772 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:59:40,773 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 20:59:40,773 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)] === [2023-12-05 20:59:40,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:59:40,773 INFO L85 PathProgramCache]: Analyzing trace with hash 12647959, now seen corresponding path program 1 times [2023-12-05 20:59:40,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:59:40,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826282867] [2023-12-05 20:59:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:59:40,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:59:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:59:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:59:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:59:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826282867] [2023-12-05 20:59:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826282867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:59:41,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:59:41,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 20:59:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355024485] [2023-12-05 20:59:41,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:59:41,066 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 20:59:41,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:59:41,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 20:59:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 20:59:41,069 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 151 [2023-12-05 20:59:41,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 123 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:41,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:59:41,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 151 [2023-12-05 20:59:41,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:59:41,492 INFO L124 PetriNetUnfolderBase]: 896/2283 cut-off events. [2023-12-05 20:59:41,492 INFO L125 PetriNetUnfolderBase]: For 419/537 co-relation queries the response was YES. [2023-12-05 20:59:41,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5091 conditions, 2283 events. 896/2283 cut-off events. For 419/537 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17529 event pairs, 896 based on Foata normal form. 0/2097 useless extension candidates. Maximal degree in co-relation 3706. Up to 1375 conditions per place. [2023-12-05 20:59:41,518 INFO L140 encePairwiseOnDemand]: 148/151 looper letters, 42 selfloop transitions, 1 changer transitions 1/121 dead transitions. [2023-12-05 20:59:41,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 121 transitions, 427 flow [2023-12-05 20:59:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:59:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:59:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 322 transitions. [2023-12-05 20:59:41,521 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7108167770419426 [2023-12-05 20:59:41,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 322 transitions. [2023-12-05 20:59:41,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 322 transitions. [2023-12-05 20:59:41,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:59:41,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 322 transitions. [2023-12-05 20:59:41,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:41,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:41,525 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:41,526 INFO L308 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2023-12-05 20:59:41,526 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 121 transitions, 427 flow [2023-12-05 20:59:41,527 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:41,527 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:59:41,527 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:59:41,528 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 20:59:41,528 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)] === [2023-12-05 20:59:41,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:59:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1694982633, now seen corresponding path program 1 times [2023-12-05 20:59:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:59:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618040305] [2023-12-05 20:59:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:59:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:59:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:59:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:59:41,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:59:41,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618040305] [2023-12-05 20:59:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618040305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:59:41,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:59:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 20:59:41,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030245144] [2023-12-05 20:59:41,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:59:41,716 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 20:59:41,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:59:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 20:59:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 20:59:41,718 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 151 [2023-12-05 20:59:41,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 121 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:41,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:59:41,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 151 [2023-12-05 20:59:41,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:59:42,063 INFO L124 PetriNetUnfolderBase]: 840/2192 cut-off events. [2023-12-05 20:59:42,063 INFO L125 PetriNetUnfolderBase]: For 1043/1281 co-relation queries the response was YES. [2023-12-05 20:59:42,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6075 conditions, 2192 events. 840/2192 cut-off events. For 1043/1281 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16757 event pairs, 840 based on Foata normal form. 0/2036 useless extension candidates. Maximal degree in co-relation 4586. Up to 1289 conditions per place. [2023-12-05 20:59:42,082 INFO L140 encePairwiseOnDemand]: 148/151 looper letters, 36 selfloop transitions, 1 changer transitions 1/119 dead transitions. [2023-12-05 20:59:42,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 119 transitions, 491 flow [2023-12-05 20:59:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:59:42,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:59:42,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2023-12-05 20:59:42,084 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7373068432671082 [2023-12-05 20:59:42,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2023-12-05 20:59:42,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2023-12-05 20:59:42,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:59:42,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2023-12-05 20:59:42,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,088 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,089 INFO L308 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2023-12-05 20:59:42,089 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 119 transitions, 491 flow [2023-12-05 20:59:42,089 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,089 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:59:42,090 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:59:42,090 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 20:59:42,090 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)] === [2023-12-05 20:59:42,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:59:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1694982634, now seen corresponding path program 1 times [2023-12-05 20:59:42,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:59:42,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6116425] [2023-12-05 20:59:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:59:42,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:59:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:59:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:59:42,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:59:42,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6116425] [2023-12-05 20:59:42,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6116425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:59:42,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:59:42,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 20:59:42,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061126661] [2023-12-05 20:59:42,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:59:42,230 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 20:59:42,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:59:42,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 20:59:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 20:59:42,232 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 151 [2023-12-05 20:59:42,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 119 transitions, 491 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:59:42,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 151 [2023-12-05 20:59:42,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:59:42,576 INFO L124 PetriNetUnfolderBase]: 784/2101 cut-off events. [2023-12-05 20:59:42,576 INFO L125 PetriNetUnfolderBase]: For 1850/2232 co-relation queries the response was YES. [2023-12-05 20:59:42,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6965 conditions, 2101 events. 784/2101 cut-off events. For 1850/2232 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16081 event pairs, 784 based on Foata normal form. 29/1975 useless extension candidates. Maximal degree in co-relation 5495. Up to 1203 conditions per place. [2023-12-05 20:59:42,600 INFO L140 encePairwiseOnDemand]: 148/151 looper letters, 38 selfloop transitions, 1 changer transitions 1/117 dead transitions. [2023-12-05 20:59:42,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 117 transitions, 559 flow [2023-12-05 20:59:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:59:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:59:42,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-12-05 20:59:42,602 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7019867549668874 [2023-12-05 20:59:42,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-12-05 20:59:42,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-12-05 20:59:42,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:59:42,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-12-05 20:59:42,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,606 INFO L308 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2023-12-05 20:59:42,606 INFO L500 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 559 flow [2023-12-05 20:59:42,607 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,607 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:59:42,607 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:59:42,607 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 20:59:42,607 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-12-05 20:59:42,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:59:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1454650631, now seen corresponding path program 1 times [2023-12-05 20:59:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:59:42,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947239121] [2023-12-05 20:59:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:59:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:59:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:59:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:59:42,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:59:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947239121] [2023-12-05 20:59:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947239121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:59:42,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:59:42,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-05 20:59:42,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918893363] [2023-12-05 20:59:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:59:42,734 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-05 20:59:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:59:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-05 20:59:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-05 20:59:42,735 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 151 [2023-12-05 20:59:42,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 559 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:42,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:59:42,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 151 [2023-12-05 20:59:42,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:59:43,071 INFO L124 PetriNetUnfolderBase]: 736/1945 cut-off events. [2023-12-05 20:59:43,071 INFO L125 PetriNetUnfolderBase]: For 2752/3272 co-relation queries the response was YES. [2023-12-05 20:59:43,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7634 conditions, 1945 events. 736/1945 cut-off events. For 2752/3272 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 14617 event pairs, 736 based on Foata normal form. 15/1832 useless extension candidates. Maximal degree in co-relation 6120. Up to 1119 conditions per place. [2023-12-05 20:59:43,095 INFO L140 encePairwiseOnDemand]: 146/151 looper letters, 34 selfloop transitions, 1 changer transitions 1/113 dead transitions. [2023-12-05 20:59:43,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 113 transitions, 599 flow [2023-12-05 20:59:43,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:59:43,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:59:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-12-05 20:59:43,136 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6975717439293598 [2023-12-05 20:59:43,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-12-05 20:59:43,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-12-05 20:59:43,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:59:43,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-12-05 20:59:43,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,140 INFO L308 CegarLoopForPetriNet]: 142 programPoint places, -6 predicate places. [2023-12-05 20:59:43,140 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 113 transitions, 599 flow [2023-12-05 20:59:43,140 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,141 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:59:43,141 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:59:43,141 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 20:59:43,141 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-12-05 20:59:43,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:59:43,141 INFO L85 PathProgramCache]: Analyzing trace with hash 744614698, now seen corresponding path program 1 times [2023-12-05 20:59:43,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:59:43,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300088464] [2023-12-05 20:59:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:59:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:59:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:59:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:59:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:59:43,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300088464] [2023-12-05 20:59:43,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300088464] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:59:43,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:59:43,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 20:59:43,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450657196] [2023-12-05 20:59:43,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:59:43,241 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 20:59:43,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:59:43,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 20:59:43,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 20:59:43,242 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 151 [2023-12-05 20:59:43,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 113 transitions, 599 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:59:43,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 151 [2023-12-05 20:59:43,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:59:43,539 INFO L124 PetriNetUnfolderBase]: 680/1814 cut-off events. [2023-12-05 20:59:43,539 INFO L125 PetriNetUnfolderBase]: For 3821/4465 co-relation queries the response was YES. [2023-12-05 20:59:43,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8171 conditions, 1814 events. 680/1814 cut-off events. For 3821/4465 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 13280 event pairs, 680 based on Foata normal form. 21/1716 useless extension candidates. Maximal degree in co-relation 6451. Up to 1033 conditions per place. [2023-12-05 20:59:43,558 INFO L140 encePairwiseOnDemand]: 148/151 looper letters, 31 selfloop transitions, 1 changer transitions 1/111 dead transitions. [2023-12-05 20:59:43,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 111 transitions, 649 flow [2023-12-05 20:59:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:59:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:59:43,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-12-05 20:59:43,560 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7527593818984547 [2023-12-05 20:59:43,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-12-05 20:59:43,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-12-05 20:59:43,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:59:43,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-12-05 20:59:43,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,564 INFO L308 CegarLoopForPetriNet]: 142 programPoint places, -6 predicate places. [2023-12-05 20:59:43,564 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 111 transitions, 649 flow [2023-12-05 20:59:43,564 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,564 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 20:59:43,565 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:59:43,565 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 20:59:43,565 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)] === [2023-12-05 20:59:43,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 20:59:43,565 INFO L85 PathProgramCache]: Analyzing trace with hash 744614697, now seen corresponding path program 1 times [2023-12-05 20:59:43,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 20:59:43,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851814970] [2023-12-05 20:59:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 20:59:43,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 20:59:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 20:59:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 20:59:43,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 20:59:43,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851814970] [2023-12-05 20:59:43,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851814970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 20:59:43,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 20:59:43,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 20:59:43,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746354906] [2023-12-05 20:59:43,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 20:59:43,653 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 20:59:43,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 20:59:43,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 20:59:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 20:59:43,655 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 151 [2023-12-05 20:59:43,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 111 transitions, 649 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 20:59:43,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 151 [2023-12-05 20:59:43,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 20:59:43,973 INFO L124 PetriNetUnfolderBase]: 624/1683 cut-off events. [2023-12-05 20:59:43,973 INFO L125 PetriNetUnfolderBase]: For 4958/5666 co-relation queries the response was YES. [2023-12-05 20:59:43,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8477 conditions, 1683 events. 624/1683 cut-off events. For 4958/5666 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 12045 event pairs, 624 based on Foata normal form. 0/1594 useless extension candidates. Maximal degree in co-relation 6566. Up to 947 conditions per place. [2023-12-05 20:59:43,980 INFO L140 encePairwiseOnDemand]: 148/151 looper letters, 0 selfloop transitions, 0 changer transitions 109/109 dead transitions. [2023-12-05 20:59:43,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 109 transitions, 685 flow [2023-12-05 20:59:43,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 20:59:43,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 20:59:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-12-05 20:59:43,982 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7240618101545254 [2023-12-05 20:59:43,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-12-05 20:59:43,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-12-05 20:59:43,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 20:59:43,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-12-05 20:59:43,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,985 INFO L308 CegarLoopForPetriNet]: 142 programPoint places, -6 predicate places. [2023-12-05 20:59:43,985 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 109 transitions, 685 flow [2023-12-05 20:59:43,986 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 20:59:43,993 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/read_write_lock-1-pthread.i_BEv2_AllErrorsAtOnce [2023-12-05 20:59:44,015 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 20 remaining) [2023-12-05 20:59:44,016 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-12-05 20:59:44,016 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-12-05 20:59:44,016 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-12-05 20:59:44,017 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-12-05 20:59:44,017 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-12-05 20:59:44,017 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-12-05 20:59:44,017 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-12-05 20:59:44,017 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-12-05 20:59:44,017 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-12-05 20:59:44,018 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-12-05 20:59:44,018 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-12-05 20:59:44,018 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-12-05 20:59:44,018 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-12-05 20:59:44,018 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-12-05 20:59:44,018 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-12-05 20:59:44,019 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 20 remaining) [2023-12-05 20:59:44,019 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 20 remaining) [2023-12-05 20:59:44,019 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 20 remaining) [2023-12-05 20:59:44,019 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 20 remaining) [2023-12-05 20:59:44,019 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 20:59:44,020 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-12-05 20:59:44,023 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 20:59:44,023 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 20:59:44,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 08:59:44 BasicIcfg [2023-12-05 20:59:44,029 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 20:59:44,031 INFO L158 Benchmark]: Toolchain (without parser) took 5890.04ms. Allocated memory was 200.3MB in the beginning and 599.8MB in the end (delta: 399.5MB). Free memory was 151.5MB in the beginning and 416.6MB in the end (delta: -265.1MB). Peak memory consumption was 224.4MB. Max. memory is 8.0GB. [2023-12-05 20:59:44,031 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 200.3MB. Free memory is still 156.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 20:59:44,032 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.16ms. Allocated memory is still 200.3MB. Free memory was 151.5MB in the beginning and 131.5MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-05 20:59:44,032 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.98ms. Allocated memory is still 200.3MB. Free memory was 131.5MB in the beginning and 129.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 20:59:44,032 INFO L158 Benchmark]: Boogie Preprocessor took 29.46ms. Allocated memory is still 200.3MB. Free memory was 129.1MB in the beginning and 127.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 20:59:44,033 INFO L158 Benchmark]: RCFGBuilder took 560.33ms. Allocated memory is still 200.3MB. Free memory was 127.4MB in the beginning and 108.9MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-05 20:59:44,033 INFO L158 Benchmark]: TraceAbstraction took 4793.22ms. Allocated memory was 200.3MB in the beginning and 599.8MB in the end (delta: 399.5MB). Free memory was 108.1MB in the beginning and 416.6MB in the end (delta: -308.5MB). Peak memory consumption was 181.4MB. Max. memory is 8.0GB. [2023-12-05 20:59:44,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 200.3MB. Free memory is still 156.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 436.16ms. Allocated memory is still 200.3MB. Free memory was 151.5MB in the beginning and 131.5MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.98ms. Allocated memory is still 200.3MB. Free memory was 131.5MB in the beginning and 129.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.46ms. Allocated memory is still 200.3MB. Free memory was 129.1MB in the beginning and 127.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 560.33ms. Allocated memory is still 200.3MB. Free memory was 127.4MB in the beginning and 108.9MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 4793.22ms. Allocated memory was 200.3MB in the beginning and 599.8MB in the end (delta: 399.5MB). Free memory was 108.1MB in the beginning and 416.6MB in the end (delta: -308.5MB). Peak memory consumption was 181.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - 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, 180 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: 4.6s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 251 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 251 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 260 IncrementalHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 51 mSDtfsCounter, 260 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=685occurred in iteration=7, InterpolantAutomatonStates: 21, 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, 1.1s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 263 ConstructedInterpolants, 0 QuantifiedInterpolants, 862 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 20:59:44,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...