/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/mix020.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:07:06,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:07:06,259 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:07:06,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:07:06,280 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:07:06,281 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:07:06,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:07:06,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:07:06,282 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:07:06,282 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:07:06,283 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:07:06,283 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:07:06,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:07:06,284 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:07:06,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:07:06,284 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:07:06,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:07:06,285 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:07:06,285 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:07:06,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:07:06,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:07:06,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:07:06,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:07:06,287 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:07:06,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:07:06,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:07:06,288 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:07:06,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:07:06,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:07:06,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:07:06,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:07:06,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:07:06,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:07:06,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:07:06,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:07:06,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:07:06,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:07:06,495 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:07:06,495 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:07:06,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix020.oepc.i [2023-12-05 21:07:07,664 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:07:07,945 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:07:07,945 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix020.oepc.i [2023-12-05 21:07:07,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4def049a/f29d78ec1caf4cf580aeeacfbb9c692d/FLAG408932e1e [2023-12-05 21:07:07,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4def049a/f29d78ec1caf4cf580aeeacfbb9c692d [2023-12-05 21:07:07,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:07:07,977 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:07:07,978 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:07:07,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:07:07,982 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:07:07,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:07" (1/1) ... [2023-12-05 21:07:07,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0cdb28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:07, skipping insertion in model container [2023-12-05 21:07:07,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:07" (1/1) ... [2023-12-05 21:07:08,037 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:07:08,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:07:08,413 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:07:08,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:07:08,488 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:07:08,488 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:07:08,494 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:07:08,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08 WrapperNode [2023-12-05 21:07:08,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:07:08,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:07:08,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:07:08,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:07:08,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,516 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,548 INFO L138 Inliner]: procedures = 177, calls = 70, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-12-05 21:07:08,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:07:08,549 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:07:08,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:07:08,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:07:08,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,578 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:07:08,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:07:08,592 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:07:08,592 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:07:08,593 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (1/1) ... [2023-12-05 21:07:08,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:07:08,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:07:08,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:07:08,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:07:08,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:07:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:07:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:07:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:07:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:07:08,670 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:07:08,671 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:07:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:07:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:07:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:07:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:07:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-12-05 21:07:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-12-05 21:07:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:07:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:07:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:07:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:07:08,674 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:07:08,804 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:07:08,806 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:07:09,205 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:07:09,332 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:07:09,333 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:07:09,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:09 BoogieIcfgContainer [2023-12-05 21:07:09,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:07:09,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:07:09,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:07:09,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:07:09,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:07:07" (1/3) ... [2023-12-05 21:07:09,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d87da3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:09, skipping insertion in model container [2023-12-05 21:07:09,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:08" (2/3) ... [2023-12-05 21:07:09,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d87da3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:09, skipping insertion in model container [2023-12-05 21:07:09,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:09" (3/3) ... [2023-12-05 21:07:09,344 INFO L112 eAbstractionObserver]: Analyzing ICFG mix020.oepc.i [2023-12-05 21:07:09,360 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:07:09,360 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-12-05 21:07:09,361 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:07:09,422 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:07:09,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 145 transitions, 306 flow [2023-12-05 21:07:09,502 INFO L124 PetriNetUnfolderBase]: 3/141 cut-off events. [2023-12-05 21:07:09,503 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:09,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 141 events. 3/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-12-05 21:07:09,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 145 transitions, 306 flow [2023-12-05 21:07:09,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 92 transitions, 193 flow [2023-12-05 21:07:09,532 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:07:09,541 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;@3e07ec25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:07:09,541 INFO L363 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-12-05 21:07:09,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:07:09,563 INFO L124 PetriNetUnfolderBase]: 0/43 cut-off events. [2023-12-05 21:07:09,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:09,564 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:09,564 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] [2023-12-05 21:07:09,565 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:09,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:09,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2017719474, now seen corresponding path program 1 times [2023-12-05 21:07:09,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:09,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414489633] [2023-12-05 21:07:09,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:09,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:09,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:07:09,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:09,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414489633] [2023-12-05 21:07:09,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414489633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:09,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:09,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87533112] [2023-12-05 21:07:09,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:09,933 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:09,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:09,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:09,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:09,973 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 145 [2023-12-05 21:07:09,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 92 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:09,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:09,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 145 [2023-12-05 21:07:09,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:10,173 INFO L124 PetriNetUnfolderBase]: 85/349 cut-off events. [2023-12-05 21:07:10,174 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-05 21:07:10,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 349 events. 85/349 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1603 event pairs, 85 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 478. Up to 160 conditions per place. [2023-12-05 21:07:10,178 INFO L140 encePairwiseOnDemand]: 143/145 looper letters, 21 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-12-05 21:07:10,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 91 transitions, 235 flow [2023-12-05 21:07:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-12-05 21:07:10,198 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7908045977011494 [2023-12-05 21:07:10,199 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-12-05 21:07:10,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-12-05 21:07:10,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:10,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-12-05 21:07:10,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,215 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,219 INFO L308 CegarLoopForPetriNet]: 102 programPoint places, 1 predicate places. [2023-12-05 21:07:10,219 INFO L500 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 235 flow [2023-12-05 21:07:10,220 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,220 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:10,221 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] [2023-12-05 21:07:10,221 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:07:10,221 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:10,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:10,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2017719475, now seen corresponding path program 1 times [2023-12-05 21:07:10,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:10,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438863391] [2023-12-05 21:07:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:10,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:07:10,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:10,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438863391] [2023-12-05 21:07:10,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438863391] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:10,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:10,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:10,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128915862] [2023-12-05 21:07:10,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:10,359 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:10,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:10,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:10,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:10,361 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 145 [2023-12-05 21:07:10,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:10,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 145 [2023-12-05 21:07:10,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:10,456 INFO L124 PetriNetUnfolderBase]: 114/383 cut-off events. [2023-12-05 21:07:10,457 INFO L125 PetriNetUnfolderBase]: For 99/109 co-relation queries the response was YES. [2023-12-05 21:07:10,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 792 conditions, 383 events. 114/383 cut-off events. For 99/109 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1819 event pairs, 114 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 727. Up to 188 conditions per place. [2023-12-05 21:07:10,461 INFO L140 encePairwiseOnDemand]: 143/145 looper letters, 19 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-12-05 21:07:10,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 90 transitions, 271 flow [2023-12-05 21:07:10,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:10,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:10,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-12-05 21:07:10,464 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8137931034482758 [2023-12-05 21:07:10,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-12-05 21:07:10,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-12-05 21:07:10,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:10,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-12-05 21:07:10,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,468 INFO L308 CegarLoopForPetriNet]: 102 programPoint places, 2 predicate places. [2023-12-05 21:07:10,469 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 271 flow [2023-12-05 21:07:10,469 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,469 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:10,469 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:10,469 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:07:10,470 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:10,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1313204479, now seen corresponding path program 1 times [2023-12-05 21:07:10,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:10,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531247980] [2023-12-05 21:07:10,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:10,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:10,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:07:10,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531247980] [2023-12-05 21:07:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531247980] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:10,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:10,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:10,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399368411] [2023-12-05 21:07:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:10,621 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:10,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:10,623 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 145 [2023-12-05 21:07:10,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 271 flow. Second operand has 3 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 21:07:10,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:10,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 145 [2023-12-05 21:07:10,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:10,715 INFO L124 PetriNetUnfolderBase]: 112/366 cut-off events. [2023-12-05 21:07:10,715 INFO L125 PetriNetUnfolderBase]: For 248/264 co-relation queries the response was YES. [2023-12-05 21:07:10,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 366 events. 112/366 cut-off events. For 248/264 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1680 event pairs, 54 based on Foata normal form. 3/365 useless extension candidates. Maximal degree in co-relation 886. Up to 186 conditions per place. [2023-12-05 21:07:10,719 INFO L140 encePairwiseOnDemand]: 143/145 looper letters, 21 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-12-05 21:07:10,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 91 transitions, 323 flow [2023-12-05 21:07:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-12-05 21:07:10,722 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8183908045977012 [2023-12-05 21:07:10,722 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-12-05 21:07:10,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-12-05 21:07:10,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:10,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-12-05 21:07:10,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,726 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,727 INFO L308 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2023-12-05 21:07:10,727 INFO L500 AbstractCegarLoop]: Abstraction has has 105 places, 91 transitions, 323 flow [2023-12-05 21:07:10,727 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 21:07:10,728 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:10,728 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:10,728 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:07:10,728 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:10,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:10,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1313204478, now seen corresponding path program 1 times [2023-12-05 21:07:10,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:10,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971754771] [2023-12-05 21:07:10,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:10,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:10,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:07:10,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:10,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971754771] [2023-12-05 21:07:10,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971754771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:10,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:10,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:10,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169142854] [2023-12-05 21:07:10,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:10,828 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:10,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:10,830 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 145 [2023-12-05 21:07:10,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 91 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:10,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 145 [2023-12-05 21:07:10,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:10,938 INFO L124 PetriNetUnfolderBase]: 110/361 cut-off events. [2023-12-05 21:07:10,939 INFO L125 PetriNetUnfolderBase]: For 435/459 co-relation queries the response was YES. [2023-12-05 21:07:10,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127 conditions, 361 events. 110/361 cut-off events. For 435/459 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1633 event pairs, 54 based on Foata normal form. 3/360 useless extension candidates. Maximal degree in co-relation 1047. Up to 181 conditions per place. [2023-12-05 21:07:10,944 INFO L140 encePairwiseOnDemand]: 143/145 looper letters, 21 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-12-05 21:07:10,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 90 transitions, 361 flow [2023-12-05 21:07:10,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-12-05 21:07:10,946 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7908045977011494 [2023-12-05 21:07:10,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-12-05 21:07:10,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-12-05 21:07:10,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:10,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-12-05 21:07:10,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,952 INFO L308 CegarLoopForPetriNet]: 102 programPoint places, 4 predicate places. [2023-12-05 21:07:10,952 INFO L500 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 361 flow [2023-12-05 21:07:10,953 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:10,953 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:10,953 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:10,953 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:07:10,953 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:10,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -841802226, now seen corresponding path program 1 times [2023-12-05 21:07:10,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:10,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527913436] [2023-12-05 21:07:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:10,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:07:11,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:11,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527913436] [2023-12-05 21:07:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527913436] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:11,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:11,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:11,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716090245] [2023-12-05 21:07:11,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:11,038 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:11,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:11,040 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 145 [2023-12-05 21:07:11,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 361 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:11,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 145 [2023-12-05 21:07:11,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:11,127 INFO L124 PetriNetUnfolderBase]: 103/369 cut-off events. [2023-12-05 21:07:11,127 INFO L125 PetriNetUnfolderBase]: For 614/646 co-relation queries the response was YES. [2023-12-05 21:07:11,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1274 conditions, 369 events. 103/369 cut-off events. For 614/646 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1723 event pairs, 48 based on Foata normal form. 6/374 useless extension candidates. Maximal degree in co-relation 1186. Up to 174 conditions per place. [2023-12-05 21:07:11,131 INFO L140 encePairwiseOnDemand]: 143/145 looper letters, 24 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2023-12-05 21:07:11,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 92 transitions, 435 flow [2023-12-05 21:07:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-12-05 21:07:11,133 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7931034482758621 [2023-12-05 21:07:11,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-12-05 21:07:11,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-12-05 21:07:11,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:11,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-12-05 21:07:11,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,138 INFO L308 CegarLoopForPetriNet]: 102 programPoint places, 5 predicate places. [2023-12-05 21:07:11,138 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 435 flow [2023-12-05 21:07:11,138 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,138 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:11,139 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:11,139 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:07:11,140 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:11,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:11,143 INFO L85 PathProgramCache]: Analyzing trace with hash -841802225, now seen corresponding path program 1 times [2023-12-05 21:07:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392176588] [2023-12-05 21:07:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:11,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:07:11,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:11,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392176588] [2023-12-05 21:07:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392176588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:11,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:11,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970185487] [2023-12-05 21:07:11,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:11,272 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:11,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:11,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:11,275 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 145 [2023-12-05 21:07:11,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:11,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 145 [2023-12-05 21:07:11,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:11,363 INFO L124 PetriNetUnfolderBase]: 96/335 cut-off events. [2023-12-05 21:07:11,363 INFO L125 PetriNetUnfolderBase]: For 918/958 co-relation queries the response was YES. [2023-12-05 21:07:11,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 335 events. 96/335 cut-off events. For 918/958 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1466 event pairs, 18 based on Foata normal form. 12/346 useless extension candidates. Maximal degree in co-relation 1257. Up to 161 conditions per place. [2023-12-05 21:07:11,367 INFO L140 encePairwiseOnDemand]: 143/145 looper letters, 22 selfloop transitions, 1 changer transitions 0/91 dead transitions. [2023-12-05 21:07:11,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 91 transitions, 473 flow [2023-12-05 21:07:11,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-12-05 21:07:11,369 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8160919540229885 [2023-12-05 21:07:11,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-12-05 21:07:11,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-12-05 21:07:11,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:11,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-12-05 21:07:11,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,375 INFO L308 CegarLoopForPetriNet]: 102 programPoint places, 6 predicate places. [2023-12-05 21:07:11,375 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 473 flow [2023-12-05 21:07:11,375 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,375 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:11,375 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:11,376 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:07:11,376 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:11,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:11,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1460084446, now seen corresponding path program 1 times [2023-12-05 21:07:11,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:11,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283331589] [2023-12-05 21:07:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:11,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:07:11,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:11,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283331589] [2023-12-05 21:07:11,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283331589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:11,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:11,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:11,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936696455] [2023-12-05 21:07:11,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:11,484 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:11,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:11,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:11,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:11,486 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 145 [2023-12-05 21:07:11,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:11,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 145 [2023-12-05 21:07:11,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:11,578 INFO L124 PetriNetUnfolderBase]: 76/315 cut-off events. [2023-12-05 21:07:11,578 INFO L125 PetriNetUnfolderBase]: For 1002/1044 co-relation queries the response was YES. [2023-12-05 21:07:11,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 315 events. 76/315 cut-off events. For 1002/1044 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1353 event pairs, 9 based on Foata normal form. 12/326 useless extension candidates. Maximal degree in co-relation 1219. Up to 141 conditions per place. [2023-12-05 21:07:11,582 INFO L140 encePairwiseOnDemand]: 143/145 looper letters, 27 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-12-05 21:07:11,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 94 transitions, 577 flow [2023-12-05 21:07:11,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-12-05 21:07:11,584 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7931034482758621 [2023-12-05 21:07:11,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-12-05 21:07:11,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-12-05 21:07:11,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:11,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-12-05 21:07:11,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,588 INFO L308 CegarLoopForPetriNet]: 102 programPoint places, 7 predicate places. [2023-12-05 21:07:11,588 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 577 flow [2023-12-05 21:07:11,589 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,589 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:11,589 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:11,589 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-05 21:07:11,589 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-12-05 21:07:11,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:11,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1460084445, now seen corresponding path program 1 times [2023-12-05 21:07:11,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:11,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123090739] [2023-12-05 21:07:11,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:11,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:11,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:07:11,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:11,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123090739] [2023-12-05 21:07:11,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123090739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:11,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:11,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:11,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181684433] [2023-12-05 21:07:11,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:11,683 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:11,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:11,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:11,685 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 145 [2023-12-05 21:07:11,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 transitions, 577 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:11,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 145 [2023-12-05 21:07:11,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:11,765 INFO L124 PetriNetUnfolderBase]: 56/271 cut-off events. [2023-12-05 21:07:11,765 INFO L125 PetriNetUnfolderBase]: For 1190/1246 co-relation queries the response was YES. [2023-12-05 21:07:11,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 271 events. 56/271 cut-off events. For 1190/1246 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1080 event pairs, 0 based on Foata normal form. 12/282 useless extension candidates. Maximal degree in co-relation 1093. Up to 109 conditions per place. [2023-12-05 21:07:11,767 INFO L140 encePairwiseOnDemand]: 143/145 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2023-12-05 21:07:11,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 93 transitions, 619 flow [2023-12-05 21:07:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-12-05 21:07:11,770 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8160919540229885 [2023-12-05 21:07:11,772 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-12-05 21:07:11,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-12-05 21:07:11,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:11,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-12-05 21:07:11,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,777 INFO L308 CegarLoopForPetriNet]: 102 programPoint places, 8 predicate places. [2023-12-05 21:07:11,779 INFO L500 AbstractCegarLoop]: Abstraction has has 110 places, 93 transitions, 619 flow [2023-12-05 21:07:11,779 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:11,789 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix020.oepc.i_BEv2_AllErrorsAtOnce [2023-12-05 21:07:11,831 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-12-05 21:07:11,831 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-12-05 21:07:11,831 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-12-05 21:07:11,832 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-12-05 21:07:11,833 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-12-05 21:07:11,833 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-12-05 21:07:11,837 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-12-05 21:07:11,837 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-12-05 21:07:11,837 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 12 remaining) [2023-12-05 21:07:11,837 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 12 remaining) [2023-12-05 21:07:11,838 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-12-05 21:07:11,838 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-12-05 21:07:11,838 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-05 21:07:11,839 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:07:11,848 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:07:11,849 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:07:11,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:07:11 BasicIcfg [2023-12-05 21:07:11,856 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:07:11,856 INFO L158 Benchmark]: Toolchain (without parser) took 3879.62ms. Allocated memory was 337.6MB in the beginning and 456.1MB in the end (delta: 118.5MB). Free memory was 282.4MB in the beginning and 317.7MB in the end (delta: -35.3MB). Peak memory consumption was 83.9MB. Max. memory is 8.0GB. [2023-12-05 21:07:11,857 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 228.6MB. Free memory is still 174.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:07:11,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.62ms. Allocated memory is still 337.6MB. Free memory was 282.0MB in the beginning and 257.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:11,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.39ms. Allocated memory is still 337.6MB. Free memory was 257.5MB in the beginning and 255.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:11,857 INFO L158 Benchmark]: Boogie Preprocessor took 42.14ms. Allocated memory is still 337.6MB. Free memory was 255.1MB in the beginning and 253.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:11,858 INFO L158 Benchmark]: RCFGBuilder took 742.54ms. Allocated memory is still 337.6MB. Free memory was 253.0MB in the beginning and 270.7MB in the end (delta: -17.7MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. [2023-12-05 21:07:11,859 INFO L158 Benchmark]: TraceAbstraction took 2518.60ms. Allocated memory was 337.6MB in the beginning and 456.1MB in the end (delta: 118.5MB). Free memory was 269.6MB in the beginning and 317.7MB in the end (delta: -48.0MB). Peak memory consumption was 70.4MB. Max. memory is 8.0GB. [2023-12-05 21:07:11,863 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 228.6MB. Free memory is still 174.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 517.62ms. Allocated memory is still 337.6MB. Free memory was 282.0MB in the beginning and 257.9MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.39ms. Allocated memory is still 337.6MB. Free memory was 257.5MB in the beginning and 255.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 42.14ms. Allocated memory is still 337.6MB. Free memory was 255.1MB in the beginning and 253.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 742.54ms. Allocated memory is still 337.6MB. Free memory was 253.0MB in the beginning and 270.7MB in the end (delta: -17.7MB). Peak memory consumption was 14.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2518.60ms. Allocated memory was 337.6MB in the beginning and 456.1MB in the end (delta: 118.5MB). Free memory was 269.6MB in the beginning and 317.7MB in the end (delta: -48.0MB). Peak memory consumption was 70.4MB. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 180 locations, 12 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: 2.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 195 IncrementalHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 60 mSDtfsCounter, 195 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=619occurred 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 564 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:07:11,882 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...