/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/mix019.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:07:03,366 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:07:03,431 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 21:07:03,450 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:07:03,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:07:03,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:07:03,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:07:03,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:07:03,452 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:07:03,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:07:03,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:07:03,455 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:07:03,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:07:03,456 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:07:03,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:07:03,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:07:03,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:07:03,456 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:07:03,457 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:07:03,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:07:03,457 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:07:03,457 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:07:03,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:07:03,458 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:07:03,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:07:03,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:07:03,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:07:03,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:07:03,459 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:07:03,459 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:07:03,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:07:03,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:07:03,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:07:03,460 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:07:03,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:07:03,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:07:03,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:07:03,691 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:07:03,691 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:07:03,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix019.opt.i [2023-12-05 21:07:04,632 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:07:04,890 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:07:04,890 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix019.opt.i [2023-12-05 21:07:04,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1c762e73/65663054bdc740e3ae94ba2604299adc/FLAG763aa5998 [2023-12-05 21:07:04,916 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1c762e73/65663054bdc740e3ae94ba2604299adc [2023-12-05 21:07:04,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:07:04,919 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:07:04,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:07:04,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:07:04,925 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:07:04,926 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:04" (1/1) ... [2023-12-05 21:07:04,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff3eb75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:04, skipping insertion in model container [2023-12-05 21:07:04,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:07:04" (1/1) ... [2023-12-05 21:07:04,980 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:07:05,240 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:07:05,247 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:07:05,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:07:05,330 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:07:05,331 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:07:05,335 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:07:05,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05 WrapperNode [2023-12-05 21:07:05,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:07:05,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:07:05,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:07:05,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:07:05,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,388 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 154 [2023-12-05 21:07:05,388 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:07:05,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:07:05,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:07:05,389 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:07:05,395 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,398 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,399 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,406 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,407 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,408 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,411 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:07:05,412 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:07:05,412 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:07:05,412 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:07:05,413 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (1/1) ... [2023-12-05 21:07:05,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:07:05,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:07:05,444 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 21:07:05,455 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 21:07:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:07:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:07:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:07:05,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:07:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:07:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:07:05,471 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:07:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:07:05,471 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:07:05,471 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:07:05,471 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:07:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:07:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:07:05,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:07:05,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:07:05,473 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 21:07:05,582 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:07:05,584 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:07:05,844 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:07:05,985 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:07:05,986 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:07:05,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:05 BoogieIcfgContainer [2023-12-05 21:07:05,988 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:07:05,990 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:07:05,990 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:07:05,992 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:07:05,992 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:07:04" (1/3) ... [2023-12-05 21:07:05,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33963c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:05, skipping insertion in model container [2023-12-05 21:07:05,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:07:05" (2/3) ... [2023-12-05 21:07:05,993 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33963c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:07:05, skipping insertion in model container [2023-12-05 21:07:05,993 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:07:05" (3/3) ... [2023-12-05 21:07:05,994 INFO L112 eAbstractionObserver]: Analyzing ICFG mix019.opt.i [2023-12-05 21:07:06,006 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:07:06,006 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:07:06,006 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:07:06,050 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:07:06,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 122 transitions, 256 flow [2023-12-05 21:07:06,129 INFO L124 PetriNetUnfolderBase]: 3/119 cut-off events. [2023-12-05 21:07:06,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:06,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 119 events. 3/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2023-12-05 21:07:06,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 122 transitions, 256 flow [2023-12-05 21:07:06,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 72 transitions, 150 flow [2023-12-05 21:07:06,149 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:07:06,155 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;@7f3aa4dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:07:06,155 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:07:06,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:07:06,168 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2023-12-05 21:07:06,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:06,169 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:06,169 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] [2023-12-05 21:07:06,169 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:07:06,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -103215675, now seen corresponding path program 1 times [2023-12-05 21:07:06,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:06,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223128960] [2023-12-05 21:07:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:06,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:06,452 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 21:07:06,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:06,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223128960] [2023-12-05 21:07:06,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223128960] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:06,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:06,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067731682] [2023-12-05 21:07:06,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:06,464 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:06,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:06,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:06,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:06,492 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2023-12-05 21:07:06,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:06,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:06,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2023-12-05 21:07:06,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:06,547 INFO L124 PetriNetUnfolderBase]: 2/78 cut-off events. [2023-12-05 21:07:06,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:07:06,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 78 events. 2/78 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 2 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 50. Up to 15 conditions per place. [2023-12-05 21:07:06,549 INFO L140 encePairwiseOnDemand]: 120/122 looper letters, 14 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2023-12-05 21:07:06,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 178 flow [2023-12-05 21:07:06,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-12-05 21:07:06,561 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7896174863387978 [2023-12-05 21:07:06,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-12-05 21:07:06,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-12-05 21:07:06,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:06,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-12-05 21:07:06,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:06,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:06,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:06,579 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 1 predicate places. [2023-12-05 21:07:06,580 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 178 flow [2023-12-05 21:07:06,580 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:06,580 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:06,580 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] [2023-12-05 21:07:06,580 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:07:06,581 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:07:06,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:06,581 INFO L85 PathProgramCache]: Analyzing trace with hash -103215674, now seen corresponding path program 1 times [2023-12-05 21:07:06,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:06,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855794633] [2023-12-05 21:07:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:06,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:06,736 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 21:07:06,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:06,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855794633] [2023-12-05 21:07:06,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855794633] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:06,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:06,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:06,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970389290] [2023-12-05 21:07:06,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:06,738 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:06,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:06,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:06,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:06,739 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 122 [2023-12-05 21:07:06,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 21:07:06,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:06,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 122 [2023-12-05 21:07:06,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:06,778 INFO L124 PetriNetUnfolderBase]: 3/78 cut-off events. [2023-12-05 21:07:06,778 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-12-05 21:07:06,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 78 events. 3/78 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 3 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 15 conditions per place. [2023-12-05 21:07:06,780 INFO L140 encePairwiseOnDemand]: 120/122 looper letters, 12 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-12-05 21:07:06,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 70 transitions, 200 flow [2023-12-05 21:07:06,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-12-05 21:07:06,784 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8087431693989071 [2023-12-05 21:07:06,784 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-12-05 21:07:06,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-12-05 21:07:06,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:06,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-12-05 21:07:06,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 21:07:06,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:06,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:06,787 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 2 predicate places. [2023-12-05 21:07:06,788 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 200 flow [2023-12-05 21:07:06,788 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 21:07:06,788 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:06,788 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] [2023-12-05 21:07:06,788 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:07:06,788 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:07:06,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash 945917463, now seen corresponding path program 1 times [2023-12-05 21:07:06,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:06,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679594340] [2023-12-05 21:07:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:06,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:06,878 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 21:07:06,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:06,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679594340] [2023-12-05 21:07:06,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679594340] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:06,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:06,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652025812] [2023-12-05 21:07:06,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:06,883 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:06,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:06,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:06,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:06,885 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 122 [2023-12-05 21:07:06,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:06,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:06,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 122 [2023-12-05 21:07:06,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:06,933 INFO L124 PetriNetUnfolderBase]: 3/77 cut-off events. [2023-12-05 21:07:06,933 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-12-05 21:07:06,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 77 events. 3/77 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 3 based on Foata normal form. 1/78 useless extension candidates. Maximal degree in co-relation 74. Up to 15 conditions per place. [2023-12-05 21:07:06,933 INFO L140 encePairwiseOnDemand]: 120/122 looper letters, 12 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-12-05 21:07:06,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 222 flow [2023-12-05 21:07:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:06,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-12-05 21:07:06,935 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8087431693989071 [2023-12-05 21:07:06,935 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-12-05 21:07:06,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-12-05 21:07:06,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:06,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-12-05 21:07:06,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 21:07:06,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:06,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:06,939 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 3 predicate places. [2023-12-05 21:07:06,939 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 222 flow [2023-12-05 21:07:06,939 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:07:06,939 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:06,939 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] [2023-12-05 21:07:06,939 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:07:06,940 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:07:06,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash 945917462, now seen corresponding path program 1 times [2023-12-05 21:07:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:06,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697442437] [2023-12-05 21:07:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:06,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:07,040 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 21:07:07,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:07,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697442437] [2023-12-05 21:07:07,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697442437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:07,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:07,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:07,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618552440] [2023-12-05 21:07:07,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:07,042 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:07,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:07,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:07,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:07,043 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2023-12-05 21:07:07,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 21:07:07,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:07,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2023-12-05 21:07:07,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:07,068 INFO L124 PetriNetUnfolderBase]: 3/76 cut-off events. [2023-12-05 21:07:07,068 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-12-05 21:07:07,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157 conditions, 76 events. 3/76 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 3 based on Foata normal form. 1/77 useless extension candidates. Maximal degree in co-relation 82. Up to 14 conditions per place. [2023-12-05 21:07:07,069 INFO L140 encePairwiseOnDemand]: 120/122 looper letters, 12 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-12-05 21:07:07,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 68 transitions, 242 flow [2023-12-05 21:07:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-12-05 21:07:07,070 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7841530054644809 [2023-12-05 21:07:07,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-12-05 21:07:07,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-12-05 21:07:07,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:07,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-12-05 21:07:07,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 21:07:07,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:07,072 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:07,073 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 4 predicate places. [2023-12-05 21:07:07,073 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 242 flow [2023-12-05 21:07:07,074 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 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 21:07:07,074 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:07,074 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] [2023-12-05 21:07:07,074 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:07:07,074 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:07:07,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1173177287, now seen corresponding path program 1 times [2023-12-05 21:07:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419078699] [2023-12-05 21:07:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:07,153 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 21:07:07,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:07,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419078699] [2023-12-05 21:07:07,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419078699] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:07,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:07,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:07,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783582132] [2023-12-05 21:07:07,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:07,154 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:07,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:07,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:07,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:07,155 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 122 [2023-12-05 21:07:07,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:07:07,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:07,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 122 [2023-12-05 21:07:07,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:07,192 INFO L124 PetriNetUnfolderBase]: 2/73 cut-off events. [2023-12-05 21:07:07,192 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-12-05 21:07:07,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 73 events. 2/73 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 41 event pairs, 0 based on Foata normal form. 2/75 useless extension candidates. Maximal degree in co-relation 81. Up to 13 conditions per place. [2023-12-05 21:07:07,193 INFO L140 encePairwiseOnDemand]: 120/122 looper letters, 12 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-12-05 21:07:07,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 68 transitions, 272 flow [2023-12-05 21:07:07,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:07,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-12-05 21:07:07,195 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8087431693989071 [2023-12-05 21:07:07,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-12-05 21:07:07,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-12-05 21:07:07,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:07,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-12-05 21:07:07,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 21:07:07,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:07,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:07,198 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 5 predicate places. [2023-12-05 21:07:07,199 INFO L500 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 272 flow [2023-12-05 21:07:07,199 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 21:07:07,199 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:07:07,199 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] [2023-12-05 21:07:07,199 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:07:07,199 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:07:07,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:07:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1173177286, now seen corresponding path program 1 times [2023-12-05 21:07:07,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:07:07,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836762797] [2023-12-05 21:07:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:07:07,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:07:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:07:07,268 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 21:07:07,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:07:07,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836762797] [2023-12-05 21:07:07,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836762797] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:07:07,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:07:07,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:07:07,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487464120] [2023-12-05 21:07:07,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:07:07,269 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:07:07,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:07:07,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:07:07,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:07:07,270 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 122 [2023-12-05 21:07:07,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 21:07:07,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:07:07,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 122 [2023-12-05 21:07:07,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:07:07,292 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2023-12-05 21:07:07,292 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2023-12-05 21:07:07,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 70 events. 1/70 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 2/72 useless extension candidates. Maximal degree in co-relation 74. Up to 12 conditions per place. [2023-12-05 21:07:07,293 INFO L140 encePairwiseOnDemand]: 120/122 looper letters, 0 selfloop transitions, 0 changer transitions 67/67 dead transitions. [2023-12-05 21:07:07,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 67 transitions, 290 flow [2023-12-05 21:07:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:07:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:07:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-12-05 21:07:07,294 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7841530054644809 [2023-12-05 21:07:07,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-12-05 21:07:07,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-12-05 21:07:07,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:07:07,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-12-05 21:07:07,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 21:07:07,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:07,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 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 21:07:07,298 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2023-12-05 21:07:07,298 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 290 flow [2023-12-05 21:07:07,298 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 21:07:07,307 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix019.opt.i_BEv2_AllErrorsAtOnce [2023-12-05 21:07:07,342 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:07:07,342 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:07:07,343 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:07:07,343 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:07:07,343 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:07:07,343 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:07:07,343 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:07:07,343 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:07:07,343 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:07:07,344 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:07:07,344 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:07:07,346 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:07:07,346 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:07:07,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:07:07 BasicIcfg [2023-12-05 21:07:07,351 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:07:07,357 INFO L158 Benchmark]: Toolchain (without parser) took 2432.62ms. Allocated memory was 185.6MB in the beginning and 231.7MB in the end (delta: 46.1MB). Free memory was 150.1MB in the beginning and 132.8MB in the end (delta: 17.4MB). Peak memory consumption was 64.8MB. Max. memory is 8.0GB. [2023-12-05 21:07:07,358 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 140.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:07:07,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.65ms. Allocated memory is still 185.6MB. Free memory was 150.1MB in the beginning and 126.0MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:07,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.58ms. Allocated memory is still 185.6MB. Free memory was 126.0MB in the beginning and 123.3MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:07,358 INFO L158 Benchmark]: Boogie Preprocessor took 23.09ms. Allocated memory is still 185.6MB. Free memory was 123.3MB in the beginning and 121.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:07:07,360 INFO L158 Benchmark]: RCFGBuilder took 575.98ms. Allocated memory was 185.6MB in the beginning and 231.7MB in the end (delta: 46.1MB). Free memory was 121.2MB in the beginning and 196.9MB in the end (delta: -75.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. [2023-12-05 21:07:07,360 INFO L158 Benchmark]: TraceAbstraction took 1361.45ms. Allocated memory is still 231.7MB. Free memory was 196.4MB in the beginning and 132.8MB in the end (delta: 63.6MB). Peak memory consumption was 64.6MB. Max. memory is 8.0GB. [2023-12-05 21:07:07,362 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 140.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.65ms. Allocated memory is still 185.6MB. Free memory was 150.1MB in the beginning and 126.0MB in the end (delta: 24.1MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.58ms. Allocated memory is still 185.6MB. Free memory was 126.0MB in the beginning and 123.3MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.09ms. Allocated memory is still 185.6MB. Free memory was 123.3MB in the beginning and 121.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 575.98ms. Allocated memory was 185.6MB in the beginning and 231.7MB in the end (delta: 46.1MB). Free memory was 121.2MB in the beginning and 196.9MB in the end (delta: -75.7MB). Peak memory consumption was 37.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1361.45ms. Allocated memory is still 231.7MB. Free memory was 196.4MB in the beginning and 132.8MB in the end (delta: 63.6MB). Peak memory consumption was 64.6MB. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 148 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=6, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 378 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:07:07,376 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...