/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:35:03,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:35:03,960 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 05:35:03,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:35:03,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:35:03,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:35:03,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:35:03,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:35:03,991 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:35:03,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:35:03,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:35:03,994 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:35:03,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:35:03,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:35:03,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:35:03,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:35:03,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:35:03,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:35:03,995 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:35:03,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:35:03,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:35:03,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:35:03,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:35:03,996 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:35:03,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:35:03,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:35:03,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:35:03,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:35:03,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:35:03,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:35:03,998 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:35:03,999 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:35:03,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:35:03,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:35:04,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:35:04,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:35:04,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:35:04,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:35:04,212 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:35:04,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-11-30 05:35:05,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:35:05,394 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:35:05,395 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-11-30 05:35:05,400 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e73bd8dc/bc99414310a94c44880d47291efed86d/FLAGe6ff85c6a [2023-11-30 05:35:05,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e73bd8dc/bc99414310a94c44880d47291efed86d [2023-11-30 05:35:05,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:35:05,412 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:35:05,413 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:35:05,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:35:05,416 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:35:05,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71978db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05, skipping insertion in model container [2023-11-30 05:35:05,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,432 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:35:05,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:35:05,557 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:35:05,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:35:05,582 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:35:05,583 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:35:05,587 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:35:05,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05 WrapperNode [2023-11-30 05:35:05,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:35:05,588 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:35:05,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:35:05,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:35:05,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,615 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 211 [2023-11-30 05:35:05,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:35:05,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:35:05,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:35:05,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:35:05,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:35:05,640 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:35:05,640 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:35:05,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:35:05,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (1/1) ... [2023-11-30 05:35:05,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:35:05,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:35:05,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 05:35:05,660 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 [2023-11-30 05:35:05,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:35:05,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:35:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:35:05,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:35:05,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:35:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 05:35:05,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 05:35:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-30 05:35:05,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-30 05:35:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:35:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:35:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:35:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 05:35:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 05:35:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:35:05,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:35:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:35:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:35:05,691 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 05:35:05,756 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:35:05,758 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:35:05,974 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:35:06,017 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:35:06,017 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 05:35:06,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:35:06 BoogieIcfgContainer [2023-11-30 05:35:06,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:35:06,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:35:06,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:35:06,022 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:35:06,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:35:05" (1/3) ... [2023-11-30 05:35:06,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f17f9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:35:06, skipping insertion in model container [2023-11-30 05:35:06,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:35:05" (2/3) ... [2023-11-30 05:35:06,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f17f9c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:35:06, skipping insertion in model container [2023-11-30 05:35:06,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:35:06" (3/3) ... [2023-11-30 05:35:06,024 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-30 05:35:06,036 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:35:06,037 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-30 05:35:06,037 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:35:06,085 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-30 05:35:06,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 168 transitions, 364 flow [2023-11-30 05:35:06,200 INFO L124 PetriNetUnfolderBase]: 2/164 cut-off events. [2023-11-30 05:35:06,201 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-30 05:35:06,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 164 events. 2/164 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 123 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-11-30 05:35:06,204 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 168 transitions, 364 flow [2023-11-30 05:35:06,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 137 transitions, 295 flow [2023-11-30 05:35:06,219 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:35:06,228 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;@574659b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:35:06,228 INFO L363 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-30 05:35:06,239 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:35:06,239 INFO L124 PetriNetUnfolderBase]: 1/62 cut-off events. [2023-11-30 05:35:06,239 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:35:06,240 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:35:06,240 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:06,240 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:35:06,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:35:06,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1252102376, now seen corresponding path program 1 times [2023-11-30 05:35:06,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:35:06,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896820996] [2023-11-30 05:35:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:35:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:35:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:35:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:35:06,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:35:06,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896820996] [2023-11-30 05:35:06,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896820996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:35:06,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:35:06,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:35:06,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469355864] [2023-11-30 05:35:06,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:35:06,766 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:35:06,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:35:06,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:35:06,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:35:06,791 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2023-11-30 05:35:06,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 137 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:06,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:35:06,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2023-11-30 05:35:06,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:35:07,441 INFO L124 PetriNetUnfolderBase]: 3072/5656 cut-off events. [2023-11-30 05:35:07,441 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2023-11-30 05:35:07,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 5656 events. 3072/5656 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 39879 event pairs, 3072 based on Foata normal form. 1/5128 useless extension candidates. Maximal degree in co-relation 8416. Up to 4346 conditions per place. [2023-11-30 05:35:07,482 INFO L140 encePairwiseOnDemand]: 164/168 looper letters, 41 selfloop transitions, 1 changer transitions 1/134 dead transitions. [2023-11-30 05:35:07,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 373 flow [2023-11-30 05:35:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:35:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:35:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-11-30 05:35:07,496 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2023-11-30 05:35:07,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-11-30 05:35:07,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-11-30 05:35:07,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:35:07,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-11-30 05:35:07,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:07,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:07,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:07,511 INFO L307 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-30 05:35:07,512 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 134 transitions, 373 flow [2023-11-30 05:35:07,512 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:07,513 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:35:07,513 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:07,513 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:35:07,513 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:35:07,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:35:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1252102375, now seen corresponding path program 1 times [2023-11-30 05:35:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:35:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665693446] [2023-11-30 05:35:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:35:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:35:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:35:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:35:07,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:35:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665693446] [2023-11-30 05:35:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665693446] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:35:07,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:35:07,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 05:35:07,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341193591] [2023-11-30 05:35:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:35:07,815 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 05:35:07,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:35:07,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 05:35:07,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-30 05:35:07,817 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 168 [2023-11-30 05:35:07,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 134 transitions, 373 flow. Second operand has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:07,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:35:07,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 168 [2023-11-30 05:35:07,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:35:08,308 INFO L124 PetriNetUnfolderBase]: 2646/4908 cut-off events. [2023-11-30 05:35:08,308 INFO L125 PetriNetUnfolderBase]: For 1039/1295 co-relation queries the response was YES. [2023-11-30 05:35:08,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12671 conditions, 4908 events. 2646/4908 cut-off events. For 1039/1295 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 33756 event pairs, 2646 based on Foata normal form. 0/4594 useless extension candidates. Maximal degree in co-relation 9457. Up to 3831 conditions per place. [2023-11-30 05:35:08,331 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 45 selfloop transitions, 1 changer transitions 1/132 dead transitions. [2023-11-30 05:35:08,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 132 transitions, 457 flow [2023-11-30 05:35:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:35:08,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:35:08,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-11-30 05:35:08,333 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7321428571428571 [2023-11-30 05:35:08,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-11-30 05:35:08,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-11-30 05:35:08,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:35:08,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-11-30 05:35:08,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,336 INFO L307 CegarLoopForPetriNet]: 149 programPoint places, 0 predicate places. [2023-11-30 05:35:08,337 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 132 transitions, 457 flow [2023-11-30 05:35:08,337 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,337 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:35:08,337 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:08,337 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:35:08,338 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:35:08,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:35:08,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1857107077, now seen corresponding path program 1 times [2023-11-30 05:35:08,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:35:08,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332529788] [2023-11-30 05:35:08,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:35:08,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:35:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:35:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:35:08,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:35:08,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332529788] [2023-11-30 05:35:08,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332529788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:35:08,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:35:08,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:35:08,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101765289] [2023-11-30 05:35:08,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:35:08,532 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:35:08,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:35:08,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:35:08,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:35:08,535 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 168 [2023-11-30 05:35:08,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 132 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:35:08,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 168 [2023-11-30 05:35:08,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:35:08,947 INFO L124 PetriNetUnfolderBase]: 2352/4470 cut-off events. [2023-11-30 05:35:08,947 INFO L125 PetriNetUnfolderBase]: For 2189/2827 co-relation queries the response was YES. [2023-11-30 05:35:08,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14847 conditions, 4470 events. 2352/4470 cut-off events. For 2189/2827 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31042 event pairs, 2352 based on Foata normal form. 66/4292 useless extension candidates. Maximal degree in co-relation 12209. Up to 3401 conditions per place. [2023-11-30 05:35:08,977 INFO L140 encePairwiseOnDemand]: 163/168 looper letters, 41 selfloop transitions, 1 changer transitions 1/128 dead transitions. [2023-11-30 05:35:08,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 128 transitions, 521 flow [2023-11-30 05:35:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:35:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:35:08,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-11-30 05:35:08,978 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7281746031746031 [2023-11-30 05:35:08,978 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-11-30 05:35:08,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-11-30 05:35:08,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:35:08,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-11-30 05:35:08,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,981 INFO L307 CegarLoopForPetriNet]: 149 programPoint places, -2 predicate places. [2023-11-30 05:35:08,981 INFO L500 AbstractCegarLoop]: Abstraction has has 147 places, 128 transitions, 521 flow [2023-11-30 05:35:08,982 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:08,982 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:35:08,982 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:08,982 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:35:08,982 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:35:08,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:35:08,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1125976844, now seen corresponding path program 1 times [2023-11-30 05:35:08,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:35:08,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848393765] [2023-11-30 05:35:08,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:35:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:35:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:35:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:35:09,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:35:09,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848393765] [2023-11-30 05:35:09,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848393765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:35:09,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:35:09,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:35:09,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3950194] [2023-11-30 05:35:09,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:35:09,110 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:35:09,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:35:09,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:35:09,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:35:09,111 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2023-11-30 05:35:09,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 128 transitions, 521 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:09,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:35:09,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2023-11-30 05:35:09,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:35:09,593 INFO L124 PetriNetUnfolderBase]: 2304/4378 cut-off events. [2023-11-30 05:35:09,593 INFO L125 PetriNetUnfolderBase]: For 3965/4877 co-relation queries the response was YES. [2023-11-30 05:35:09,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17773 conditions, 4378 events. 2304/4378 cut-off events. For 3965/4877 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 30387 event pairs, 2304 based on Foata normal form. 0/4166 useless extension candidates. Maximal degree in co-relation 14731. Up to 3321 conditions per place. [2023-11-30 05:35:09,618 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 37 selfloop transitions, 1 changer transitions 1/126 dead transitions. [2023-11-30 05:35:09,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 126 transitions, 581 flow [2023-11-30 05:35:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:35:09,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:35:09,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-11-30 05:35:09,620 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.751984126984127 [2023-11-30 05:35:09,620 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-11-30 05:35:09,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-11-30 05:35:09,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:35:09,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-11-30 05:35:09,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:09,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:09,622 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:09,623 INFO L307 CegarLoopForPetriNet]: 149 programPoint places, -2 predicate places. [2023-11-30 05:35:09,623 INFO L500 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 581 flow [2023-11-30 05:35:09,624 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:09,624 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:35:09,624 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:09,624 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:35:09,624 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:35:09,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:35:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1125976843, now seen corresponding path program 1 times [2023-11-30 05:35:09,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:35:09,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860621688] [2023-11-30 05:35:09,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:35:09,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:35:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:35:09,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:35:09,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:35:09,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860621688] [2023-11-30 05:35:09,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860621688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:35:09,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:35:09,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:35:09,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129834506] [2023-11-30 05:35:09,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:35:09,741 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:35:09,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:35:09,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:35:09,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:35:09,742 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 168 [2023-11-30 05:35:09,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 126 transitions, 581 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:09,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:35:09,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 168 [2023-11-30 05:35:09,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:35:10,315 INFO L124 PetriNetUnfolderBase]: 2256/4286 cut-off events. [2023-11-30 05:35:10,315 INFO L125 PetriNetUnfolderBase]: For 6681/8257 co-relation queries the response was YES. [2023-11-30 05:35:10,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20570 conditions, 4286 events. 2256/4286 cut-off events. For 6681/8257 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 29693 event pairs, 2256 based on Foata normal form. 24/4138 useless extension candidates. Maximal degree in co-relation 17189. Up to 3241 conditions per place. [2023-11-30 05:35:10,372 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 34 selfloop transitions, 1 changer transitions 1/124 dead transitions. [2023-11-30 05:35:10,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 124 transitions, 635 flow [2023-11-30 05:35:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:35:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:35:10,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-11-30 05:35:10,374 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7698412698412699 [2023-11-30 05:35:10,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-11-30 05:35:10,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-11-30 05:35:10,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:35:10,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-11-30 05:35:10,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:10,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:10,376 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:10,378 INFO L307 CegarLoopForPetriNet]: 149 programPoint places, -2 predicate places. [2023-11-30 05:35:10,378 INFO L500 AbstractCegarLoop]: Abstraction has has 147 places, 124 transitions, 635 flow [2023-11-30 05:35:10,379 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:10,379 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:35:10,379 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:10,381 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 05:35:10,382 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:35:10,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:35:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash -31614438, now seen corresponding path program 1 times [2023-11-30 05:35:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:35:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739979113] [2023-11-30 05:35:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:35:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:35:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:35:10,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:35:10,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:35:10,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739979113] [2023-11-30 05:35:10,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739979113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:35:10,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:35:10,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:35:10,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790935586] [2023-11-30 05:35:10,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:35:10,635 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:35:10,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:35:10,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:35:10,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:35:10,636 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 168 [2023-11-30 05:35:10,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 124 transitions, 635 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:10,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:35:10,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 168 [2023-11-30 05:35:10,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:35:11,108 INFO L124 PetriNetUnfolderBase]: 2109/4023 cut-off events. [2023-11-30 05:35:11,108 INFO L125 PetriNetUnfolderBase]: For 9323/11275 co-relation queries the response was YES. [2023-11-30 05:35:11,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22398 conditions, 4023 events. 2109/4023 cut-off events. For 9323/11275 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 27471 event pairs, 2109 based on Foata normal form. 36/3919 useless extension candidates. Maximal degree in co-relation 18531. Up to 3026 conditions per place. [2023-11-30 05:35:11,136 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 34 selfloop transitions, 1 changer transitions 1/122 dead transitions. [2023-11-30 05:35:11,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 122 transitions, 689 flow [2023-11-30 05:35:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:35:11,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:35:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-11-30 05:35:11,138 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7698412698412699 [2023-11-30 05:35:11,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-11-30 05:35:11,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-11-30 05:35:11,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:35:11,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-11-30 05:35:11,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:11,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:11,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:11,142 INFO L307 CegarLoopForPetriNet]: 149 programPoint places, -2 predicate places. [2023-11-30 05:35:11,142 INFO L500 AbstractCegarLoop]: Abstraction has has 147 places, 122 transitions, 689 flow [2023-11-30 05:35:11,143 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:11,143 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:35:11,143 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:11,143 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 05:35:11,143 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-30 05:35:11,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:35:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash -31614439, now seen corresponding path program 1 times [2023-11-30 05:35:11,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:35:11,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16921192] [2023-11-30 05:35:11,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:35:11,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:35:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:35:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:35:11,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:35:11,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16921192] [2023-11-30 05:35:11,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16921192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:35:11,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:35:11,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:35:11,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470807297] [2023-11-30 05:35:11,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:35:11,204 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:35:11,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:35:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:35:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:35:11,205 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 168 [2023-11-30 05:35:11,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 122 transitions, 689 flow. Second operand has 3 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) [2023-11-30 05:35:11,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:35:11,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 168 [2023-11-30 05:35:11,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:35:11,601 INFO L124 PetriNetUnfolderBase]: 1962/3760 cut-off events. [2023-11-30 05:35:11,601 INFO L125 PetriNetUnfolderBase]: For 12174/14190 co-relation queries the response was YES. [2023-11-30 05:35:11,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23729 conditions, 3760 events. 1962/3760 cut-off events. For 12174/14190 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25144 event pairs, 1962 based on Foata normal form. 36/3688 useless extension candidates. Maximal degree in co-relation 19393. Up to 2811 conditions per place. [2023-11-30 05:35:11,612 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 0 selfloop transitions, 0 changer transitions 120/120 dead transitions. [2023-11-30 05:35:11,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 120 transitions, 733 flow [2023-11-30 05:35:11,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:35:11,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:35:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-11-30 05:35:11,614 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7440476190476191 [2023-11-30 05:35:11,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-11-30 05:35:11,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-11-30 05:35:11,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:35:11,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-11-30 05:35:11,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:11,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:11,617 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:35:11,617 INFO L307 CegarLoopForPetriNet]: 149 programPoint places, -2 predicate places. [2023-11-30 05:35:11,617 INFO L500 AbstractCegarLoop]: Abstraction has has 147 places, 120 transitions, 733 flow [2023-11-30 05:35:11,618 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-30 05:35:11,623 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/parallel-ticket-4.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 05:35:11,654 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2023-11-30 05:35:11,655 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2023-11-30 05:35:11,656 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2023-11-30 05:35:11,656 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 20 remaining) [2023-11-30 05:35:11,656 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 20 remaining) [2023-11-30 05:35:11,656 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 20 remaining) [2023-11-30 05:35:11,656 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 20 remaining) [2023-11-30 05:35:11,657 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 20 remaining) [2023-11-30 05:35:11,657 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 20 remaining) [2023-11-30 05:35:11,657 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 20 remaining) [2023-11-30 05:35:11,657 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 20 remaining) [2023-11-30 05:35:11,660 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 20 remaining) [2023-11-30 05:35:11,660 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 05:35:11,660 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:35:11,663 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:35:11,663 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:35:11,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:35:11 BasicIcfg [2023-11-30 05:35:11,669 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:35:11,670 INFO L158 Benchmark]: Toolchain (without parser) took 6257.13ms. Allocated memory was 622.9MB in the beginning and 3.2GB in the end (delta: 2.6GB). Free memory was 569.7MB in the beginning and 2.7GB in the end (delta: -2.1GB). Peak memory consumption was 470.8MB. Max. memory is 16.0GB. [2023-11-30 05:35:11,670 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 377.5MB. Free memory was 325.7MB in the beginning and 325.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:35:11,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.91ms. Allocated memory is still 622.9MB. Free memory was 569.2MB in the beginning and 557.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-30 05:35:11,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.62ms. Allocated memory is still 622.9MB. Free memory was 557.7MB in the beginning and 555.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:35:11,671 INFO L158 Benchmark]: Boogie Preprocessor took 23.45ms. Allocated memory is still 622.9MB. Free memory was 555.7MB in the beginning and 554.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:35:11,671 INFO L158 Benchmark]: RCFGBuilder took 378.32ms. Allocated memory is still 622.9MB. Free memory was 554.1MB in the beginning and 526.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-11-30 05:35:11,671 INFO L158 Benchmark]: TraceAbstraction took 5648.65ms. Allocated memory was 622.9MB in the beginning and 3.2GB in the end (delta: 2.6GB). Free memory was 526.3MB in the beginning and 2.7GB in the end (delta: -2.2GB). Peak memory consumption was 426.8MB. Max. memory is 16.0GB. [2023-11-30 05:35:11,673 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 377.5MB. Free memory was 325.7MB in the beginning and 325.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 174.91ms. Allocated memory is still 622.9MB. Free memory was 569.2MB in the beginning and 557.7MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.62ms. Allocated memory is still 622.9MB. Free memory was 557.7MB in the beginning and 555.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.45ms. Allocated memory is still 622.9MB. Free memory was 555.7MB in the beginning and 554.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 378.32ms. Allocated memory is still 622.9MB. Free memory was 554.1MB in the beginning and 526.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 5648.65ms. Allocated memory was 622.9MB in the beginning and 3.2GB in the end (delta: 2.6GB). Free memory was 526.3MB in the beginning and 2.7GB in the end (delta: -2.2GB). Peak memory consumption was 426.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 204 locations, 20 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 236 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 272 IncrementalHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 44 mSDtfsCounter, 272 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=733occurred in iteration=7, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 486 NumberOfCodeBlocks, 486 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 479 ConstructedInterpolants, 0 QuantifiedInterpolants, 2732 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 05:35:11,688 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...