/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/goblint-regression/06-symbeq_07-tricky_address2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:57:02,634 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:57:02,676 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 04:57:02,695 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:57:02,696 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:57:02,696 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:57:02,697 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:57:02,697 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:57:02,697 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:57:02,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:57:02,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:57:02,700 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:57:02,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:57:02,702 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:57:02,702 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:57:02,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:57:02,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:57:02,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:57:02,703 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:57:02,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:57:02,703 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:57:02,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:57:02,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:57:02,704 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:57:02,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:57:02,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:57:02,704 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:57:02,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:57:02,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:57:02,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:57:02,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:57:02,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:57:02,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:57:02,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:57:02,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:57:02,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:57:02,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:57:02,880 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:57:02,880 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:57:02,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-11-30 04:57:03,804 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:57:04,053 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:57:04,063 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_07-tricky_address2.i [2023-11-30 04:57:04,079 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7947543a6/2d9cf18831b6479ab2403d5c255997bb/FLAG66b5cf2c4 [2023-11-30 04:57:04,102 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7947543a6/2d9cf18831b6479ab2403d5c255997bb [2023-11-30 04:57:04,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:57:04,117 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:57:04,118 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:57:04,118 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:57:04,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:57:04,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20786c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04, skipping insertion in model container [2023-11-30 04:57:04,122 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,178 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:57:04,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:57:04,573 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:57:04,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:57:04,686 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:57:04,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04 WrapperNode [2023-11-30 04:57:04,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:57:04,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:57:04,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:57:04,689 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:57:04,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,727 INFO L138 Inliner]: procedures = 265, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-11-30 04:57:04,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:57:04,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:57:04,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:57:04,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:57:04,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,740 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,741 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,742 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,743 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,744 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:57:04,745 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:57:04,745 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:57:04,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:57:04,746 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (1/1) ... [2023-11-30 04:57:04,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:57:04,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:04,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 04:57:04,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 04:57:04,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:57:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:57:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 04:57:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:57:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:57:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 04:57:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:57:04,791 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-30 04:57:04,791 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-30 04:57:04,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:57:04,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:57:04,793 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 04:57:04,923 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:57:04,924 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:57:05,039 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:57:05,056 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:57:05,056 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-30 04:57:05,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:57:05 BoogieIcfgContainer [2023-11-30 04:57:05,058 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:57:05,059 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:57:05,059 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:57:05,061 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:57:05,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:57:04" (1/3) ... [2023-11-30 04:57:05,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103e4b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:57:05, skipping insertion in model container [2023-11-30 04:57:05,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:04" (2/3) ... [2023-11-30 04:57:05,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103e4b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:57:05, skipping insertion in model container [2023-11-30 04:57:05,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:57:05" (3/3) ... [2023-11-30 04:57:05,063 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_07-tricky_address2.i [2023-11-30 04:57:05,074 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:57:05,075 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-30 04:57:05,075 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:57:05,117 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:57:05,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 86 transitions, 176 flow [2023-11-30 04:57:05,167 INFO L124 PetriNetUnfolderBase]: 4/85 cut-off events. [2023-11-30 04:57:05,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:57:05,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 85 events. 4/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 88 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-30 04:57:05,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 86 transitions, 176 flow [2023-11-30 04:57:05,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 85 transitions, 173 flow [2023-11-30 04:57:05,179 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:57:05,183 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;@1096c37c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:57:05,183 INFO L363 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-30 04:57:05,189 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:57:05,189 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2023-11-30 04:57:05,189 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:57:05,189 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:05,190 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] [2023-11-30 04:57:05,190 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:05,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:05,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1811600091, now seen corresponding path program 1 times [2023-11-30 04:57:05,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:05,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314479117] [2023-11-30 04:57:05,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:05,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:05,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314479117] [2023-11-30 04:57:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314479117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:05,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:05,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:57:05,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875453930] [2023-11-30 04:57:05,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:05,396 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:57:05,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:05,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:57:05,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:57:05,420 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 86 [2023-11-30 04:57:05,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 85 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:05,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 86 [2023-11-30 04:57:05,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:05,489 INFO L124 PetriNetUnfolderBase]: 7/130 cut-off events. [2023-11-30 04:57:05,489 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 04:57:05,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 130 events. 7/130 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 289 event pairs, 6 based on Foata normal form. 4/110 useless extension candidates. Maximal degree in co-relation 110. Up to 27 conditions per place. [2023-11-30 04:57:05,491 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 16 selfloop transitions, 2 changer transitions 1/86 dead transitions. [2023-11-30 04:57:05,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 211 flow [2023-11-30 04:57:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:57:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:57:05,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 230 transitions. [2023-11-30 04:57:05,499 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8914728682170543 [2023-11-30 04:57:05,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 230 transitions. [2023-11-30 04:57:05,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 230 transitions. [2023-11-30 04:57:05,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:05,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 230 transitions. [2023-11-30 04:57:05,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,509 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-11-30 04:57:05,509 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 211 flow [2023-11-30 04:57:05,509 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,509 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:05,509 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] [2023-11-30 04:57:05,509 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:57:05,510 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:05,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1496777623, now seen corresponding path program 1 times [2023-11-30 04:57:05,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2269390] [2023-11-30 04:57:05,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:05,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:05,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2269390] [2023-11-30 04:57:05,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2269390] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:57:05,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208083290] [2023-11-30 04:57:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:05,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:05,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:05,614 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:57:05,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 04:57:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:05,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 04:57:05,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:57:05,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:05,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:57:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:05,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208083290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:57:05,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:57:05,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-30 04:57:05,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574207767] [2023-11-30 04:57:05,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:57:05,750 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 04:57:05,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:05,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 04:57:05,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-30 04:57:05,752 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 86 [2023-11-30 04:57:05,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 211 flow. Second operand has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:05,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 86 [2023-11-30 04:57:05,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:05,860 INFO L124 PetriNetUnfolderBase]: 7/137 cut-off events. [2023-11-30 04:57:05,860 INFO L125 PetriNetUnfolderBase]: For 16/24 co-relation queries the response was YES. [2023-11-30 04:57:05,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 137 events. 7/137 cut-off events. For 16/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 280 event pairs, 6 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 127. Up to 32 conditions per place. [2023-11-30 04:57:05,862 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 17 selfloop transitions, 9 changer transitions 1/93 dead transitions. [2023-11-30 04:57:05,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 93 transitions, 287 flow [2023-11-30 04:57:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:57:05,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:57:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 640 transitions. [2023-11-30 04:57:05,865 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8268733850129198 [2023-11-30 04:57:05,865 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 640 transitions. [2023-11-30 04:57:05,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 640 transitions. [2023-11-30 04:57:05,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:05,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 640 transitions. [2023-11-30 04:57:05,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.11111111111111) internal successors, (640), 9 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,872 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 86.0) internal successors, (860), 10 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,872 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 10 predicate places. [2023-11-30 04:57:05,872 INFO L500 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 287 flow [2023-11-30 04:57:05,873 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 70.1) internal successors, (701), 10 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:05,873 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:05,873 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:05,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 04:57:06,080 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:06,080 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:06,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1366905943, now seen corresponding path program 2 times [2023-11-30 04:57:06,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:06,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995711447] [2023-11-30 04:57:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:06,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:06,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-30 04:57:06,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995711447] [2023-11-30 04:57:06,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995711447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:06,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:06,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:57:06,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484978691] [2023-11-30 04:57:06,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:06,174 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:57:06,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:06,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:57:06,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:57:06,175 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 86 [2023-11-30 04:57:06,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:06,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 86 [2023-11-30 04:57:06,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:06,271 INFO L124 PetriNetUnfolderBase]: 55/260 cut-off events. [2023-11-30 04:57:06,271 INFO L125 PetriNetUnfolderBase]: For 111/139 co-relation queries the response was YES. [2023-11-30 04:57:06,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 260 events. 55/260 cut-off events. For 111/139 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1123 event pairs, 36 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 422. Up to 88 conditions per place. [2023-11-30 04:57:06,273 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 24 selfloop transitions, 2 changer transitions 3/98 dead transitions. [2023-11-30 04:57:06,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 98 transitions, 361 flow [2023-11-30 04:57:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:57:06,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:57:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2023-11-30 04:57:06,274 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.810077519379845 [2023-11-30 04:57:06,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2023-11-30 04:57:06,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2023-11-30 04:57:06,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:06,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2023-11-30 04:57:06,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,276 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2023-11-30 04:57:06,276 INFO L500 AbstractCegarLoop]: Abstraction has has 96 places, 98 transitions, 361 flow [2023-11-30 04:57:06,276 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,276 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:06,276 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:06,277 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:57:06,277 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:06,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:06,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1366905942, now seen corresponding path program 1 times [2023-11-30 04:57:06,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:06,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161419181] [2023-11-30 04:57:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:06,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:06,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:06,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:06,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:06,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161419181] [2023-11-30 04:57:06,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161419181] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:57:06,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913783134] [2023-11-30 04:57:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:06,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:06,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:06,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:57:06,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-30 04:57:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:06,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-30 04:57:06,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:57:06,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:06,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:57:06,596 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:06,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913783134] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:57:06,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:57:06,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-30 04:57:06,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345775675] [2023-11-30 04:57:06,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:57:06,598 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 04:57:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 04:57:06,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-30 04:57:06,602 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 86 [2023-11-30 04:57:06,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 98 transitions, 361 flow. Second operand has 18 states, 18 states have (on average 70.27777777777777) internal successors, (1265), 18 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:06,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 86 [2023-11-30 04:57:06,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:06,791 INFO L124 PetriNetUnfolderBase]: 55/280 cut-off events. [2023-11-30 04:57:06,791 INFO L125 PetriNetUnfolderBase]: For 222/264 co-relation queries the response was YES. [2023-11-30 04:57:06,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 657 conditions, 280 events. 55/280 cut-off events. For 222/264 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1110 event pairs, 36 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 463. Up to 88 conditions per place. [2023-11-30 04:57:06,795 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 26 selfloop transitions, 21 changer transitions 3/118 dead transitions. [2023-11-30 04:57:06,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 118 transitions, 569 flow [2023-11-30 04:57:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-30 04:57:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-30 04:57:06,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1478 transitions. [2023-11-30 04:57:06,799 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8183831672203765 [2023-11-30 04:57:06,799 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1478 transitions. [2023-11-30 04:57:06,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1478 transitions. [2023-11-30 04:57:06,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:06,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1478 transitions. [2023-11-30 04:57:06,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 70.38095238095238) internal successors, (1478), 21 states have internal predecessors, (1478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 86.0) internal successors, (1892), 22 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,806 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 86.0) internal successors, (1892), 22 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,807 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 31 predicate places. [2023-11-30 04:57:06,807 INFO L500 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 569 flow [2023-11-30 04:57:06,808 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.27777777777777) internal successors, (1265), 18 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:06,808 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:06,808 INFO L232 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:06,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-30 04:57:07,013 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-30 04:57:07,014 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:07,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:07,015 INFO L85 PathProgramCache]: Analyzing trace with hash -89138646, now seen corresponding path program 2 times [2023-11-30 04:57:07,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:07,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724104357] [2023-11-30 04:57:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:07,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:07,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:07,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724104357] [2023-11-30 04:57:07,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724104357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:57:07,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231348207] [2023-11-30 04:57:07,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 04:57:07,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:07,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:07,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:57:07,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-30 04:57:07,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 04:57:07,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 04:57:07,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 04:57:07,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:57:07,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-30 04:57:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-30 04:57:07,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 04:57:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231348207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 04:57:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [17] total 18 [2023-11-30 04:57:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918443541] [2023-11-30 04:57:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:07,410 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:57:07,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:57:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-30 04:57:07,411 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 86 [2023-11-30 04:57:07,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 569 flow. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:07,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:07,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 86 [2023-11-30 04:57:07,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:07,480 INFO L124 PetriNetUnfolderBase]: 81/343 cut-off events. [2023-11-30 04:57:07,480 INFO L125 PetriNetUnfolderBase]: For 472/562 co-relation queries the response was YES. [2023-11-30 04:57:07,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 343 events. 81/343 cut-off events. For 472/562 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1611 event pairs, 58 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 732. Up to 122 conditions per place. [2023-11-30 04:57:07,482 INFO L140 encePairwiseOnDemand]: 83/86 looper letters, 24 selfloop transitions, 2 changer transitions 5/123 dead transitions. [2023-11-30 04:57:07,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 657 flow [2023-11-30 04:57:07,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:57:07,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:57:07,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-11-30 04:57:07,483 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.813953488372093 [2023-11-30 04:57:07,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-11-30 04:57:07,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-11-30 04:57:07,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:07,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-11-30 04:57:07,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:07,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:07,484 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:07,485 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 32 predicate places. [2023-11-30 04:57:07,485 INFO L500 AbstractCegarLoop]: Abstraction has has 117 places, 123 transitions, 657 flow [2023-11-30 04:57:07,485 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:07,485 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:07,485 INFO L232 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:07,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-30 04:57:07,690 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:07,690 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:07,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:07,691 INFO L85 PathProgramCache]: Analyzing trace with hash -393132834, now seen corresponding path program 1 times [2023-11-30 04:57:07,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:07,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570727731] [2023-11-30 04:57:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:07,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:07,868 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:07,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:07,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570727731] [2023-11-30 04:57:07,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570727731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:57:07,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201337332] [2023-11-30 04:57:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:07,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:07,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:07,870 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:57:07,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-30 04:57:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:07,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-30 04:57:07,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:57:08,030 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:08,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:57:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:57:08,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201337332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:57:08,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:57:08,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-30 04:57:08,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35921604] [2023-11-30 04:57:08,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:57:08,172 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-30 04:57:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:08,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-30 04:57:08,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-30 04:57:08,174 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 86 [2023-11-30 04:57:08,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 657 flow. Second operand has 23 states, 23 states have (on average 70.52173913043478) internal successors, (1622), 23 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:08,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:08,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 86 [2023-11-30 04:57:08,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:08,432 INFO L124 PetriNetUnfolderBase]: 81/358 cut-off events. [2023-11-30 04:57:08,432 INFO L125 PetriNetUnfolderBase]: For 712/816 co-relation queries the response was YES. [2023-11-30 04:57:08,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 358 events. 81/358 cut-off events. For 712/816 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1588 event pairs, 58 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 783. Up to 122 conditions per place. [2023-11-30 04:57:08,435 INFO L140 encePairwiseOnDemand]: 80/86 looper letters, 33 selfloop transitions, 30 changer transitions 5/138 dead transitions. [2023-11-30 04:57:08,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 138 transitions, 901 flow [2023-11-30 04:57:08,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-30 04:57:08,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-30 04:57:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2104 transitions. [2023-11-30 04:57:08,439 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8155038759689922 [2023-11-30 04:57:08,439 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2104 transitions. [2023-11-30 04:57:08,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2104 transitions. [2023-11-30 04:57:08,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:08,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2104 transitions. [2023-11-30 04:57:08,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 70.13333333333334) internal successors, (2104), 30 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:08,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 86.0) internal successors, (2666), 31 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:08,447 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 86.0) internal successors, (2666), 31 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:08,449 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 61 predicate places. [2023-11-30 04:57:08,449 INFO L500 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 901 flow [2023-11-30 04:57:08,450 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 70.52173913043478) internal successors, (1622), 23 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:08,450 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:08,450 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:08,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-30 04:57:08,655 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:08,656 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:08,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash 380185552, now seen corresponding path program 2 times [2023-11-30 04:57:08,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:08,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326301309] [2023-11-30 04:57:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-30 04:57:08,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:08,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326301309] [2023-11-30 04:57:08,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326301309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:08,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:08,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 04:57:08,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056239575] [2023-11-30 04:57:08,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:08,900 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 04:57:08,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:08,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 04:57:08,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-30 04:57:08,901 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 86 [2023-11-30 04:57:08,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 901 flow. Second operand has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 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 04:57:08,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:08,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 86 [2023-11-30 04:57:08,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:09,015 INFO L124 PetriNetUnfolderBase]: 64/310 cut-off events. [2023-11-30 04:57:09,015 INFO L125 PetriNetUnfolderBase]: For 773/789 co-relation queries the response was YES. [2023-11-30 04:57:09,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 310 events. 64/310 cut-off events. For 773/789 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1163 event pairs, 45 based on Foata normal form. 36/335 useless extension candidates. Maximal degree in co-relation 779. Up to 115 conditions per place. [2023-11-30 04:57:09,021 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 37 selfloop transitions, 5 changer transitions 5/133 dead transitions. [2023-11-30 04:57:09,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 971 flow [2023-11-30 04:57:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 04:57:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 04:57:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 345 transitions. [2023-11-30 04:57:09,046 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6686046511627907 [2023-11-30 04:57:09,047 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 345 transitions. [2023-11-30 04:57:09,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 345 transitions. [2023-11-30 04:57:09,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:09,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 345 transitions. [2023-11-30 04:57:09,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 57.5) internal successors, (345), 6 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,049 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,052 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 62 predicate places. [2023-11-30 04:57:09,052 INFO L500 AbstractCegarLoop]: Abstraction has has 147 places, 133 transitions, 971 flow [2023-11-30 04:57:09,068 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.714285714285715) internal successors, (369), 7 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 04:57:09,068 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:09,068 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:09,069 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:57:09,069 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:09,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:09,069 INFO L85 PathProgramCache]: Analyzing trace with hash 380185553, now seen corresponding path program 1 times [2023-11-30 04:57:09,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:09,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811987871] [2023-11-30 04:57:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:09,679 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-30 04:57:09,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:09,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811987871] [2023-11-30 04:57:09,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811987871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:09,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:09,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-30 04:57:09,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043955666] [2023-11-30 04:57:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:09,682 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-30 04:57:09,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-30 04:57:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-30 04:57:09,683 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 86 [2023-11-30 04:57:09,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 133 transitions, 971 flow. Second operand has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:09,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 86 [2023-11-30 04:57:09,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:09,858 INFO L124 PetriNetUnfolderBase]: 50/266 cut-off events. [2023-11-30 04:57:09,858 INFO L125 PetriNetUnfolderBase]: For 907/945 co-relation queries the response was YES. [2023-11-30 04:57:09,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 266 events. 50/266 cut-off events. For 907/945 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 857 event pairs, 31 based on Foata normal form. 16/273 useless extension candidates. Maximal degree in co-relation 749. Up to 87 conditions per place. [2023-11-30 04:57:09,860 INFO L140 encePairwiseOnDemand]: 77/86 looper letters, 40 selfloop transitions, 7 changer transitions 15/138 dead transitions. [2023-11-30 04:57:09,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 138 transitions, 1135 flow [2023-11-30 04:57:09,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-30 04:57:09,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-30 04:57:09,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 414 transitions. [2023-11-30 04:57:09,861 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6017441860465116 [2023-11-30 04:57:09,861 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 414 transitions. [2023-11-30 04:57:09,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 414 transitions. [2023-11-30 04:57:09,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:09,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 414 transitions. [2023-11-30 04:57:09,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 51.75) internal successors, (414), 8 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,863 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,864 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 67 predicate places. [2023-11-30 04:57:09,864 INFO L500 AbstractCegarLoop]: Abstraction has has 152 places, 138 transitions, 1135 flow [2023-11-30 04:57:09,864 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 49.0) internal successors, (441), 9 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,864 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:09,864 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:09,864 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:57:09,864 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:09,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1174564698, now seen corresponding path program 1 times [2023-11-30 04:57:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:09,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075556982] [2023-11-30 04:57:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:09,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-30 04:57:10,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075556982] [2023-11-30 04:57:10,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075556982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:10,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:10,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-30 04:57:10,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201782558] [2023-11-30 04:57:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:10,184 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-30 04:57:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:10,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-30 04:57:10,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-30 04:57:10,185 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 86 [2023-11-30 04:57:10,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 138 transitions, 1135 flow. Second operand has 9 states, 9 states have (on average 51.0) internal successors, (459), 9 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:10,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:10,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 86 [2023-11-30 04:57:10,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:10,292 INFO L124 PetriNetUnfolderBase]: 68/301 cut-off events. [2023-11-30 04:57:10,292 INFO L125 PetriNetUnfolderBase]: For 1744/1746 co-relation queries the response was YES. [2023-11-30 04:57:10,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1379 conditions, 301 events. 68/301 cut-off events. For 1744/1746 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1035 event pairs, 5 based on Foata normal form. 16/308 useless extension candidates. Maximal degree in co-relation 1002. Up to 97 conditions per place. [2023-11-30 04:57:10,293 INFO L140 encePairwiseOnDemand]: 78/86 looper letters, 0 selfloop transitions, 0 changer transitions 144/144 dead transitions. [2023-11-30 04:57:10,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 144 transitions, 1375 flow [2023-11-30 04:57:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-30 04:57:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-30 04:57:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 431 transitions. [2023-11-30 04:57:10,295 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.626453488372093 [2023-11-30 04:57:10,295 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 431 transitions. [2023-11-30 04:57:10,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 431 transitions. [2023-11-30 04:57:10,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:10,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 431 transitions. [2023-11-30 04:57:10,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 53.875) internal successors, (431), 8 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:10,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:10,298 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 86.0) internal successors, (774), 9 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:10,298 INFO L307 CegarLoopForPetriNet]: 85 programPoint places, 72 predicate places. [2023-11-30 04:57:10,298 INFO L500 AbstractCegarLoop]: Abstraction has has 157 places, 144 transitions, 1375 flow [2023-11-30 04:57:10,299 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.0) internal successors, (459), 9 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:10,302 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/06-symbeq_07-tricky_address2.i_BEv2_AllErrorsAtOnce [2023-11-30 04:57:10,338 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-11-30 04:57:10,339 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-11-30 04:57:10,339 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-30 04:57:10,339 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2023-11-30 04:57:10,340 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2023-11-30 04:57:10,340 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 04:57:10,341 INFO L457 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1] [2023-11-30 04:57:10,344 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:57:10,344 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:57:10,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:57:10 BasicIcfg [2023-11-30 04:57:10,352 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:57:10,354 INFO L158 Benchmark]: Toolchain (without parser) took 6237.53ms. Allocated memory is still 476.1MB. Free memory was 432.7MB in the beginning and 282.4MB in the end (delta: 150.3MB). Peak memory consumption was 150.9MB. Max. memory is 16.0GB. [2023-11-30 04:57:10,354 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 329.3MB. Free memory is still 277.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:57:10,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 570.48ms. Allocated memory is still 476.1MB. Free memory was 432.2MB in the beginning and 404.0MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-11-30 04:57:10,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.20ms. Allocated memory is still 476.1MB. Free memory was 404.0MB in the beginning and 401.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:57:10,355 INFO L158 Benchmark]: Boogie Preprocessor took 17.08ms. Allocated memory is still 476.1MB. Free memory was 401.9MB in the beginning and 400.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:57:10,355 INFO L158 Benchmark]: RCFGBuilder took 312.66ms. Allocated memory is still 476.1MB. Free memory was 400.3MB in the beginning and 383.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-11-30 04:57:10,355 INFO L158 Benchmark]: TraceAbstraction took 5294.41ms. Allocated memory is still 476.1MB. Free memory was 383.0MB in the beginning and 282.4MB in the end (delta: 100.6MB). Peak memory consumption was 102.7MB. Max. memory is 16.0GB. [2023-11-30 04:57:10,356 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 329.3MB. Free memory is still 277.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 570.48ms. Allocated memory is still 476.1MB. Free memory was 432.2MB in the beginning and 404.0MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.20ms. Allocated memory is still 476.1MB. Free memory was 404.0MB in the beginning and 401.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.08ms. Allocated memory is still 476.1MB. Free memory was 401.9MB in the beginning and 400.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 312.66ms. Allocated memory is still 476.1MB. Free memory was 400.3MB in the beginning and 383.5MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5294.41ms. Allocated memory is still 476.1MB. Free memory was 383.0MB in the beginning and 282.4MB in the end (delta: 100.6MB). Peak memory consumption was 102.7MB. 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 113 locations, 15 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: 5.2s, OverallIterations: 9, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 343 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 343 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 569 IncrementalHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 60 mSDtfsCounter, 569 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 435 GetRequests, 302 SyntacticMatches, 11 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1375occurred in iteration=9, InterpolantAutomatonStates: 91, 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, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 697 NumberOfCodeBlocks, 662 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 814 ConstructedInterpolants, 0 QuantifiedInterpolants, 4406 SizeOfPredicates, 22 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 835/1340 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 04:57:10,374 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...