/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_08-tricky_address3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:57:04,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:57:04,998 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 04:57:05,019 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:57:05,020 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:57:05,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:57:05,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:57:05,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:57:05,025 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:57:05,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:57:05,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:57:05,029 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:57:05,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:57:05,031 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:57:05,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:57:05,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:57:05,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:57:05,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:57:05,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:57:05,032 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:57:05,032 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:57:05,033 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:57:05,033 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:57:05,033 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:57:05,034 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:57:05,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:57:05,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:57:05,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:57:05,036 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:57:05,036 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:57:05,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:57:05,037 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:57:05,037 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:57:05,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:57:05,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:57:05,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:57:05,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:57:05,274 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:57:05,277 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:57:05,278 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i [2023-11-30 04:57:06,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:57:06,690 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:57:06,690 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_08-tricky_address3.i [2023-11-30 04:57:06,703 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2631492/921d9c7250f346379d3bb1af08818b5b/FLAGadbcb2f5a [2023-11-30 04:57:06,715 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b2631492/921d9c7250f346379d3bb1af08818b5b [2023-11-30 04:57:06,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:57:06,717 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:57:06,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:57:06,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:57:06,722 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:57:06,723 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:57:06" (1/1) ... [2023-11-30 04:57:06,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b77820c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:06, skipping insertion in model container [2023-11-30 04:57:06,724 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:57:06" (1/1) ... [2023-11-30 04:57:06,792 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:57:07,193 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:57:07,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:57:07,274 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:57:07,334 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:57:07,335 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07 WrapperNode [2023-11-30 04:57:07,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:57:07,337 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:57:07,337 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:57:07,337 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:57:07,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,381 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,411 INFO L138 Inliner]: procedures = 265, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-11-30 04:57:07,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:57:07,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:57:07,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:57:07,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:57:07,420 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,424 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:57:07,445 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:57:07,445 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:57:07,445 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:57:07,446 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (1/1) ... [2023-11-30 04:57:07,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:57:07,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:07,482 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 04:57:07,506 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 04:57:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:57:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:57:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 04:57:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:57:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:57:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 04:57:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:57:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-30 04:57:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-30 04:57:07,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:57:07,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:57:07,516 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 04:57:07,673 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:57:07,675 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:57:07,863 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:57:07,882 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:57:07,882 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-30 04:57:07,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:57:07 BoogieIcfgContainer [2023-11-30 04:57:07,884 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:57:07,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:57:07,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:57:07,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:57:07,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:57:06" (1/3) ... [2023-11-30 04:57:07,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66370edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:57:07, skipping insertion in model container [2023-11-30 04:57:07,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:57:07" (2/3) ... [2023-11-30 04:57:07,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66370edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:57:07, skipping insertion in model container [2023-11-30 04:57:07,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:57:07" (3/3) ... [2023-11-30 04:57:07,890 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_08-tricky_address3.i [2023-11-30 04:57:07,905 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:57:07,905 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-30 04:57:07,905 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:57:07,948 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:57:07,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 89 transitions, 182 flow [2023-11-30 04:57:08,008 INFO L124 PetriNetUnfolderBase]: 4/88 cut-off events. [2023-11-30 04:57:08,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:57:08,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 88 events. 4/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-30 04:57:08,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 89 transitions, 182 flow [2023-11-30 04:57:08,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 88 transitions, 179 flow [2023-11-30 04:57:08,025 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:57:08,030 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;@2e13d7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:57:08,031 INFO L363 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-30 04:57:08,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:57:08,038 INFO L124 PetriNetUnfolderBase]: 3/32 cut-off events. [2023-11-30 04:57:08,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:57:08,039 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:08,039 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 04:57:08,040 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 04:57:08,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1290675325, now seen corresponding path program 1 times [2023-11-30 04:57:08,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:08,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161931086] [2023-11-30 04:57:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:08,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:08,304 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 04:57:08,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:08,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161931086] [2023-11-30 04:57:08,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161931086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:08,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:08,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:57:08,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033465512] [2023-11-30 04:57:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:08,315 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:57:08,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:08,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:57:08,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:57:08,348 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 89 [2023-11-30 04:57:08,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 88 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 04:57:08,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:08,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 89 [2023-11-30 04:57:08,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:08,457 INFO L124 PetriNetUnfolderBase]: 7/133 cut-off events. [2023-11-30 04:57:08,457 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 04:57:08,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 133 events. 7/133 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 296 event pairs, 6 based on Foata normal form. 4/113 useless extension candidates. Maximal degree in co-relation 113. Up to 27 conditions per place. [2023-11-30 04:57:08,459 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 16 selfloop transitions, 2 changer transitions 1/89 dead transitions. [2023-11-30 04:57:08,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 89 transitions, 217 flow [2023-11-30 04:57:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:57:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:57:08,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-11-30 04:57:08,477 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8951310861423221 [2023-11-30 04:57:08,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-11-30 04:57:08,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-11-30 04:57:08,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:08,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-11-30 04:57:08,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 04:57:08,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:08,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:08,503 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2023-11-30 04:57:08,504 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 89 transitions, 217 flow [2023-11-30 04:57:08,504 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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 04:57:08,505 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:08,505 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 04:57:08,505 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:57:08,505 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 04:57:08,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1821743772, now seen corresponding path program 1 times [2023-11-30 04:57:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:08,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100355316] [2023-11-30 04:57:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:08,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:08,695 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 04:57:08,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:08,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100355316] [2023-11-30 04:57:08,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100355316] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:57:08,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147226183] [2023-11-30 04:57:08,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:08,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:08,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:08,700 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 04:57:08,711 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 04:57:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:08,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 04:57:08,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:57:08,822 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 04:57:08,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:57:08,857 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 04:57:08,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147226183] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:57:08,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:57:08,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-30 04:57:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676650627] [2023-11-30 04:57:08,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:57:08,859 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 04:57:08,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 04:57:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-30 04:57:08,895 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 89 [2023-11-30 04:57:08,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 217 flow. Second operand has 10 states, 10 states have (on average 73.1) internal successors, (731), 10 states have internal predecessors, (731), 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 04:57:08,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:08,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 89 [2023-11-30 04:57:08,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:09,062 INFO L124 PetriNetUnfolderBase]: 7/140 cut-off events. [2023-11-30 04:57:09,063 INFO L125 PetriNetUnfolderBase]: For 16/24 co-relation queries the response was YES. [2023-11-30 04:57:09,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 140 events. 7/140 cut-off events. For 16/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 292 event pairs, 6 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 130. Up to 32 conditions per place. [2023-11-30 04:57:09,066 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 17 selfloop transitions, 9 changer transitions 1/96 dead transitions. [2023-11-30 04:57:09,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 293 flow [2023-11-30 04:57:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:57:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:57:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 667 transitions. [2023-11-30 04:57:09,072 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.83270911360799 [2023-11-30 04:57:09,072 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 667 transitions. [2023-11-30 04:57:09,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 667 transitions. [2023-11-30 04:57:09,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:09,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 667 transitions. [2023-11-30 04:57:09,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.11111111111111) internal successors, (667), 9 states have internal predecessors, (667), 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 04:57:09,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 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 04:57:09,083 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 89.0) internal successors, (890), 10 states have internal predecessors, (890), 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 04:57:09,083 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2023-11-30 04:57:09,083 INFO L500 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 293 flow [2023-11-30 04:57:09,085 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 73.1) internal successors, (731), 10 states have internal predecessors, (731), 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 04:57:09,085 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:09,085 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 04:57:09,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-30 04:57:09,291 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 04:57:09,291 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 04:57:09,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:09,292 INFO L85 PathProgramCache]: Analyzing trace with hash -83117252, now seen corresponding path program 2 times [2023-11-30 04:57:09,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:09,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265743528] [2023-11-30 04:57:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:09,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:09,377 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 04:57:09,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:09,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265743528] [2023-11-30 04:57:09,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265743528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:09,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:09,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:57:09,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342193606] [2023-11-30 04:57:09,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:09,379 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:57:09,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:09,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:57:09,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:57:09,380 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-11-30 04:57:09,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 04:57:09,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:09,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-11-30 04:57:09,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:09,454 INFO L124 PetriNetUnfolderBase]: 55/263 cut-off events. [2023-11-30 04:57:09,454 INFO L125 PetriNetUnfolderBase]: For 111/139 co-relation queries the response was YES. [2023-11-30 04:57:09,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 263 events. 55/263 cut-off events. For 111/139 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1189 event pairs, 36 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 425. Up to 88 conditions per place. [2023-11-30 04:57:09,456 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 24 selfloop transitions, 2 changer transitions 3/101 dead transitions. [2023-11-30 04:57:09,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 101 transitions, 367 flow [2023-11-30 04:57:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:57:09,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:57:09,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2023-11-30 04:57:09,458 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8164794007490637 [2023-11-30 04:57:09,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 218 transitions. [2023-11-30 04:57:09,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 218 transitions. [2023-11-30 04:57:09,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:09,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 218 transitions. [2023-11-30 04:57:09,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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 04:57:09,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:09,461 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2023-11-30 04:57:09,463 INFO L500 AbstractCegarLoop]: Abstraction has has 99 places, 101 transitions, 367 flow [2023-11-30 04:57:09,463 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 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 04:57:09,463 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:09,463 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 04:57:09,463 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:57:09,464 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 04:57:09,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:09,465 INFO L85 PathProgramCache]: Analyzing trace with hash -83117251, now seen corresponding path program 1 times [2023-11-30 04:57:09,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:09,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962939497] [2023-11-30 04:57:09,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:09,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:09,648 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 04:57:09,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:09,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962939497] [2023-11-30 04:57:09,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962939497] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:57:09,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399712073] [2023-11-30 04:57:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:09,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:09,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:09,651 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 04:57:09,655 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 04:57:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:09,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-30 04:57:09,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:57:09,797 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 04:57:09,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:57:09,887 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 04:57:09,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399712073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:57:09,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:57:09,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-30 04:57:09,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685279808] [2023-11-30 04:57:09,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:57:09,890 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 04:57:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:09,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 04:57:09,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-30 04:57:09,894 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 89 [2023-11-30 04:57:09,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 101 transitions, 367 flow. Second operand has 18 states, 18 states have (on average 73.27777777777777) internal successors, (1319), 18 states have internal predecessors, (1319), 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 04:57:09,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:09,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 89 [2023-11-30 04:57:09,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:10,141 INFO L124 PetriNetUnfolderBase]: 55/283 cut-off events. [2023-11-30 04:57:10,141 INFO L125 PetriNetUnfolderBase]: For 222/264 co-relation queries the response was YES. [2023-11-30 04:57:10,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 283 events. 55/283 cut-off events. For 222/264 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1209 event pairs, 36 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 466. Up to 88 conditions per place. [2023-11-30 04:57:10,143 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 26 selfloop transitions, 21 changer transitions 3/121 dead transitions. [2023-11-30 04:57:10,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 575 flow [2023-11-30 04:57:10,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-30 04:57:10,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-30 04:57:10,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1541 transitions. [2023-11-30 04:57:10,148 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8245050829320493 [2023-11-30 04:57:10,148 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1541 transitions. [2023-11-30 04:57:10,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1541 transitions. [2023-11-30 04:57:10,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:10,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1541 transitions. [2023-11-30 04:57:10,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 73.38095238095238) internal successors, (1541), 21 states have internal predecessors, (1541), 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 04:57:10,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 89.0) internal successors, (1958), 22 states have internal predecessors, (1958), 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 04:57:10,156 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 89.0) internal successors, (1958), 22 states have internal predecessors, (1958), 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 04:57:10,157 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 31 predicate places. [2023-11-30 04:57:10,157 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 121 transitions, 575 flow [2023-11-30 04:57:10,158 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.27777777777777) internal successors, (1319), 18 states have internal predecessors, (1319), 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 04:57:10,158 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:10,158 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 04:57:10,168 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 04:57:10,364 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 04:57:10,364 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 04:57:10,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash -922147715, now seen corresponding path program 2 times [2023-11-30 04:57:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:10,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482002207] [2023-11-30 04:57:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:10,725 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 04:57:10,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:10,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482002207] [2023-11-30 04:57:10,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482002207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:57:10,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865703901] [2023-11-30 04:57:10,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 04:57:10,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:10,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:10,727 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 04:57:10,746 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 04:57:10,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-30 04:57:10,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 04:57:10,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-30 04:57:10,805 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:57:10,844 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 04:57:10,870 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 04:57:10,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 04:57:10,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865703901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:10,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 04:57:10,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [17] total 18 [2023-11-30 04:57:10,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487378588] [2023-11-30 04:57:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:10,876 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:57:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:57:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2023-11-30 04:57:10,877 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 89 [2023-11-30 04:57:10,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 121 transitions, 575 flow. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 04:57:10,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:10,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 89 [2023-11-30 04:57:10,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:10,975 INFO L124 PetriNetUnfolderBase]: 81/346 cut-off events. [2023-11-30 04:57:10,976 INFO L125 PetriNetUnfolderBase]: For 473/565 co-relation queries the response was YES. [2023-11-30 04:57:10,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 346 events. 81/346 cut-off events. For 473/565 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1718 event pairs, 58 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 735. Up to 122 conditions per place. [2023-11-30 04:57:10,980 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 24 selfloop transitions, 2 changer transitions 5/126 dead transitions. [2023-11-30 04:57:10,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 126 transitions, 663 flow [2023-11-30 04:57:10,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:57:10,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:57:10,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2023-11-30 04:57:10,982 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8202247191011236 [2023-11-30 04:57:10,982 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 219 transitions. [2023-11-30 04:57:10,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 219 transitions. [2023-11-30 04:57:10,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:10,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 219 transitions. [2023-11-30 04:57:10,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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 04:57:10,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:10,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:57:10,986 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 32 predicate places. [2023-11-30 04:57:10,986 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 126 transitions, 663 flow [2023-11-30 04:57:10,986 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 04:57:10,987 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:10,987 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 04:57:10,993 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 04:57:11,192 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 04:57:11,193 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 04:57:11,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:11,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1841351268, now seen corresponding path program 1 times [2023-11-30 04:57:11,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:11,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989215962] [2023-11-30 04:57:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:11,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:11,468 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 04:57:11,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:11,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989215962] [2023-11-30 04:57:11,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989215962] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:57:11,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970298020] [2023-11-30 04:57:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:11,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:57:11,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:57:11,470 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 04:57:11,520 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 04:57:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:11,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-30 04:57:11,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:57:11,660 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 04:57:11,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:57:11,826 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 04:57:11,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970298020] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:57:11,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:57:11,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-30 04:57:11,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955864166] [2023-11-30 04:57:11,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:57:11,828 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-30 04:57:11,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:11,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-30 04:57:11,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-30 04:57:11,832 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 89 [2023-11-30 04:57:11,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 663 flow. Second operand has 23 states, 23 states have (on average 73.52173913043478) internal successors, (1691), 23 states have internal predecessors, (1691), 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 04:57:11,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:11,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 89 [2023-11-30 04:57:11,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:12,136 INFO L124 PetriNetUnfolderBase]: 81/361 cut-off events. [2023-11-30 04:57:12,136 INFO L125 PetriNetUnfolderBase]: For 713/819 co-relation queries the response was YES. [2023-11-30 04:57:12,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 361 events. 81/361 cut-off events. For 713/819 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1700 event pairs, 58 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 786. Up to 122 conditions per place. [2023-11-30 04:57:12,139 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 33 selfloop transitions, 30 changer transitions 5/141 dead transitions. [2023-11-30 04:57:12,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 141 transitions, 907 flow [2023-11-30 04:57:12,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-30 04:57:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-30 04:57:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2194 transitions. [2023-11-30 04:57:12,144 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8217228464419476 [2023-11-30 04:57:12,144 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2194 transitions. [2023-11-30 04:57:12,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2194 transitions. [2023-11-30 04:57:12,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:12,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2194 transitions. [2023-11-30 04:57:12,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 73.13333333333334) internal successors, (2194), 30 states have internal predecessors, (2194), 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 04:57:12,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 89.0) internal successors, (2759), 31 states have internal predecessors, (2759), 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 04:57:12,155 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 89.0) internal successors, (2759), 31 states have internal predecessors, (2759), 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 04:57:12,156 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 61 predicate places. [2023-11-30 04:57:12,156 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 141 transitions, 907 flow [2023-11-30 04:57:12,157 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 73.52173913043478) internal successors, (1691), 23 states have internal predecessors, (1691), 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 04:57:12,157 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:12,157 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 04:57:12,163 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 04:57:12,363 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 04:57:12,363 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 04:57:12,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:12,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2053439933, now seen corresponding path program 2 times [2023-11-30 04:57:12,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:12,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023654731] [2023-11-30 04:57:12,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:12,570 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 04:57:12,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:12,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023654731] [2023-11-30 04:57:12,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023654731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:12,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:12,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 04:57:12,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661654000] [2023-11-30 04:57:12,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:12,571 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 04:57:12,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:12,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 04:57:12,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-30 04:57:12,573 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 89 [2023-11-30 04:57:12,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 141 transitions, 907 flow. Second operand has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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 04:57:12,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:12,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 89 [2023-11-30 04:57:12,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:12,671 INFO L124 PetriNetUnfolderBase]: 82/373 cut-off events. [2023-11-30 04:57:12,671 INFO L125 PetriNetUnfolderBase]: For 916/953 co-relation queries the response was YES. [2023-11-30 04:57:12,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1268 conditions, 373 events. 82/373 cut-off events. For 916/953 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1640 event pairs, 57 based on Foata normal form. 20/381 useless extension candidates. Maximal degree in co-relation 936. Up to 129 conditions per place. [2023-11-30 04:57:12,674 INFO L140 encePairwiseOnDemand]: 82/89 looper letters, 39 selfloop transitions, 5 changer transitions 5/142 dead transitions. [2023-11-30 04:57:12,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1005 flow [2023-11-30 04:57:12,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 04:57:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 04:57:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 371 transitions. [2023-11-30 04:57:12,676 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6947565543071161 [2023-11-30 04:57:12,676 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 371 transitions. [2023-11-30 04:57:12,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 371 transitions. [2023-11-30 04:57:12,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:12,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 371 transitions. [2023-11-30 04:57:12,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 61.833333333333336) internal successors, (371), 6 states have internal predecessors, (371), 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 04:57:12,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 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 04:57:12,678 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 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 04:57:12,680 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 64 predicate places. [2023-11-30 04:57:12,681 INFO L500 AbstractCegarLoop]: Abstraction has has 152 places, 142 transitions, 1005 flow [2023-11-30 04:57:12,683 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 57.714285714285715) internal successors, (404), 7 states have internal predecessors, (404), 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 04:57:12,683 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:12,683 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 04:57:12,683 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:57:12,685 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 04:57:12,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2053439934, now seen corresponding path program 1 times [2023-11-30 04:57:12,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:12,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089149970] [2023-11-30 04:57:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:12,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:13,107 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 04:57:13,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:13,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089149970] [2023-11-30 04:57:13,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089149970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:13,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:13,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-30 04:57:13,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048373036] [2023-11-30 04:57:13,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:13,108 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-30 04:57:13,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-30 04:57:13,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-30 04:57:13,109 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 89 [2023-11-30 04:57:13,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 142 transitions, 1005 flow. Second operand has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 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 04:57:13,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:13,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 89 [2023-11-30 04:57:13,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:13,240 INFO L124 PetriNetUnfolderBase]: 64/315 cut-off events. [2023-11-30 04:57:13,240 INFO L125 PetriNetUnfolderBase]: For 1129/1181 co-relation queries the response was YES. [2023-11-30 04:57:13,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1249 conditions, 315 events. 64/315 cut-off events. For 1129/1181 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1206 event pairs, 39 based on Foata normal form. 20/325 useless extension candidates. Maximal degree in co-relation 890. Up to 95 conditions per place. [2023-11-30 04:57:13,243 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 40 selfloop transitions, 7 changer transitions 15/147 dead transitions. [2023-11-30 04:57:13,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 147 transitions, 1165 flow [2023-11-30 04:57:13,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-30 04:57:13,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-30 04:57:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 454 transitions. [2023-11-30 04:57:13,245 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6376404494382022 [2023-11-30 04:57:13,245 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 454 transitions. [2023-11-30 04:57:13,245 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 454 transitions. [2023-11-30 04:57:13,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:13,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 454 transitions. [2023-11-30 04:57:13,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.75) internal successors, (454), 8 states have internal predecessors, (454), 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 04:57:13,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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 04:57:13,248 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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 04:57:13,248 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 69 predicate places. [2023-11-30 04:57:13,248 INFO L500 AbstractCegarLoop]: Abstraction has has 157 places, 147 transitions, 1165 flow [2023-11-30 04:57:13,249 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 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 04:57:13,249 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:13,249 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, 1, 1, 1] [2023-11-30 04:57:13,249 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:57:13,249 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 04:57:13,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:13,249 INFO L85 PathProgramCache]: Analyzing trace with hash -57260380, now seen corresponding path program 1 times [2023-11-30 04:57:13,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:13,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960396582] [2023-11-30 04:57:13,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:13,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:13,677 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 04:57:13,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:13,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960396582] [2023-11-30 04:57:13,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960396582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:13,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:13,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-30 04:57:13,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861008010] [2023-11-30 04:57:13,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:13,678 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-30 04:57:13,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-30 04:57:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-30 04:57:13,679 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 89 [2023-11-30 04:57:13,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 147 transitions, 1165 flow. Second operand has 11 states, 11 states have (on average 46.90909090909091) internal successors, (516), 11 states have internal predecessors, (516), 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 04:57:13,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:13,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 89 [2023-11-30 04:57:13,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:14,068 INFO L124 PetriNetUnfolderBase]: 120/434 cut-off events. [2023-11-30 04:57:14,068 INFO L125 PetriNetUnfolderBase]: For 2564/2564 co-relation queries the response was YES. [2023-11-30 04:57:14,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 434 events. 120/434 cut-off events. For 2564/2564 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1842 event pairs, 6 based on Foata normal form. 16/440 useless extension candidates. Maximal degree in co-relation 1543. Up to 135 conditions per place. [2023-11-30 04:57:14,071 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 74 selfloop transitions, 21 changer transitions 16/186 dead transitions. [2023-11-30 04:57:14,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 186 transitions, 1809 flow [2023-11-30 04:57:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-30 04:57:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-30 04:57:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 809 transitions. [2023-11-30 04:57:14,074 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5681179775280899 [2023-11-30 04:57:14,075 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 809 transitions. [2023-11-30 04:57:14,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 809 transitions. [2023-11-30 04:57:14,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:14,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 809 transitions. [2023-11-30 04:57:14,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 50.5625) internal successors, (809), 16 states have internal predecessors, (809), 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 04:57:14,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 89.0) internal successors, (1513), 17 states have internal predecessors, (1513), 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 04:57:14,080 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 89.0) internal successors, (1513), 17 states have internal predecessors, (1513), 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 04:57:14,081 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 82 predicate places. [2023-11-30 04:57:14,081 INFO L500 AbstractCegarLoop]: Abstraction has has 170 places, 186 transitions, 1809 flow [2023-11-30 04:57:14,081 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 46.90909090909091) internal successors, (516), 11 states have internal predecessors, (516), 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 04:57:14,081 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:14,081 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, 1, 1, 1] [2023-11-30 04:57:14,081 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 04:57:14,081 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:14,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:14,082 INFO L85 PathProgramCache]: Analyzing trace with hash -57260381, now seen corresponding path program 1 times [2023-11-30 04:57:14,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:14,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549122979] [2023-11-30 04:57:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:14,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:14,320 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 04:57:14,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:14,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549122979] [2023-11-30 04:57:14,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549122979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:14,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:14,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:57:14,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273538863] [2023-11-30 04:57:14,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:14,321 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:57:14,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:14,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:57:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:57:14,322 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 89 [2023-11-30 04:57:14,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 186 transitions, 1809 flow. Second operand has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 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 04:57:14,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:14,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 89 [2023-11-30 04:57:14,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:14,475 INFO L124 PetriNetUnfolderBase]: 121/474 cut-off events. [2023-11-30 04:57:14,475 INFO L125 PetriNetUnfolderBase]: For 3620/3620 co-relation queries the response was YES. [2023-11-30 04:57:14,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 474 events. 121/474 cut-off events. For 3620/3620 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2034 event pairs, 6 based on Foata normal form. 16/480 useless extension candidates. Maximal degree in co-relation 1858. Up to 122 conditions per place. [2023-11-30 04:57:14,479 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 50 selfloop transitions, 9 changer transitions 56/200 dead transitions. [2023-11-30 04:57:14,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 200 transitions, 2245 flow [2023-11-30 04:57:14,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-30 04:57:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-30 04:57:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 482 transitions. [2023-11-30 04:57:14,481 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6769662921348315 [2023-11-30 04:57:14,482 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 482 transitions. [2023-11-30 04:57:14,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 482 transitions. [2023-11-30 04:57:14,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:14,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 482 transitions. [2023-11-30 04:57:14,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.25) internal successors, (482), 8 states have internal predecessors, (482), 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 04:57:14,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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 04:57:14,485 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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 04:57:14,485 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 89 predicate places. [2023-11-30 04:57:14,486 INFO L500 AbstractCegarLoop]: Abstraction has has 177 places, 200 transitions, 2245 flow [2023-11-30 04:57:14,486 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 55.625) internal successors, (445), 8 states have internal predecessors, (445), 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 04:57:14,486 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:14,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:14,486 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-30 04:57:14,486 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:14,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:14,487 INFO L85 PathProgramCache]: Analyzing trace with hash -119386339, now seen corresponding path program 1 times [2023-11-30 04:57:14,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:14,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947753502] [2023-11-30 04:57:14,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:14,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:14,704 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 04:57:14,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:14,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947753502] [2023-11-30 04:57:14,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947753502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:14,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:14,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:57:14,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014404248] [2023-11-30 04:57:14,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:14,706 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:57:14,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:57:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:57:14,707 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 89 [2023-11-30 04:57:14,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 200 transitions, 2245 flow. Second operand has 8 states, 8 states have (on average 56.25) internal successors, (450), 8 states have internal predecessors, (450), 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 04:57:14,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:14,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 89 [2023-11-30 04:57:14,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:14,909 INFO L124 PetriNetUnfolderBase]: 156/617 cut-off events. [2023-11-30 04:57:14,909 INFO L125 PetriNetUnfolderBase]: For 6004/6008 co-relation queries the response was YES. [2023-11-30 04:57:14,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3242 conditions, 617 events. 156/617 cut-off events. For 6004/6008 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3257 event pairs, 10 based on Foata normal form. 8/615 useless extension candidates. Maximal degree in co-relation 2824. Up to 158 conditions per place. [2023-11-30 04:57:14,914 INFO L140 encePairwiseOnDemand]: 78/89 looper letters, 43 selfloop transitions, 11 changer transitions 106/245 dead transitions. [2023-11-30 04:57:14,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 245 transitions, 3317 flow [2023-11-30 04:57:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-30 04:57:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-30 04:57:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 601 transitions. [2023-11-30 04:57:14,916 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6752808988764045 [2023-11-30 04:57:14,916 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 601 transitions. [2023-11-30 04:57:14,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 601 transitions. [2023-11-30 04:57:14,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:14,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 601 transitions. [2023-11-30 04:57:14,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 60.1) internal successors, (601), 10 states have internal predecessors, (601), 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 04:57:14,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 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 04:57:14,919 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 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 04:57:14,920 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 98 predicate places. [2023-11-30 04:57:14,920 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 245 transitions, 3317 flow [2023-11-30 04:57:14,920 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 56.25) internal successors, (450), 8 states have internal predecessors, (450), 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 04:57:14,920 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:57:14,921 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:57:14,921 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-30 04:57:14,921 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 04:57:14,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:57:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1428280725, now seen corresponding path program 2 times [2023-11-30 04:57:14,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:57:14,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801750152] [2023-11-30 04:57:14,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:57:14,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:57:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:57:15,122 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 04:57:15,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:57:15,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801750152] [2023-11-30 04:57:15,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801750152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:57:15,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:57:15,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-30 04:57:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79451932] [2023-11-30 04:57:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:57:15,123 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-30 04:57:15,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:57:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-30 04:57:15,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-30 04:57:15,124 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 89 [2023-11-30 04:57:15,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 245 transitions, 3317 flow. Second operand has 9 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 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 04:57:15,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:57:15,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 89 [2023-11-30 04:57:15,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:57:15,331 INFO L124 PetriNetUnfolderBase]: 168/667 cut-off events. [2023-11-30 04:57:15,332 INFO L125 PetriNetUnfolderBase]: For 7928/7956 co-relation queries the response was YES. [2023-11-30 04:57:15,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 667 events. 168/667 cut-off events. For 7928/7956 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3639 event pairs, 13 based on Foata normal form. 6/663 useless extension candidates. Maximal degree in co-relation 3322. Up to 170 conditions per place. [2023-11-30 04:57:15,335 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 0 selfloop transitions, 0 changer transitions 260/260 dead transitions. [2023-11-30 04:57:15,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 260 transitions, 3955 flow [2023-11-30 04:57:15,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-30 04:57:15,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-30 04:57:15,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 480 transitions. [2023-11-30 04:57:15,337 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6741573033707865 [2023-11-30 04:57:15,337 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 480 transitions. [2023-11-30 04:57:15,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 480 transitions. [2023-11-30 04:57:15,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:57:15,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 480 transitions. [2023-11-30 04:57:15,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 60.0) internal successors, (480), 8 states have internal predecessors, (480), 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 04:57:15,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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 04:57:15,340 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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 04:57:15,340 INFO L307 CegarLoopForPetriNet]: 88 programPoint places, 103 predicate places. [2023-11-30 04:57:15,340 INFO L500 AbstractCegarLoop]: Abstraction has has 191 places, 260 transitions, 3955 flow [2023-11-30 04:57:15,340 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 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 04:57:15,345 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/06-symbeq_08-tricky_address3.i_BEv2_AllErrorsAtOnce [2023-11-30 04:57:15,451 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-11-30 04:57:15,452 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-11-30 04:57:15,452 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-30 04:57:15,452 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-30 04:57:15,452 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 15 remaining) [2023-11-30 04:57:15,453 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2023-11-30 04:57:15,454 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 15 remaining) [2023-11-30 04:57:15,454 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-30 04:57:15,454 INFO L457 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1] [2023-11-30 04:57:15,459 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:57:15,459 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:57:15,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:57:15 BasicIcfg [2023-11-30 04:57:15,466 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:57:15,467 INFO L158 Benchmark]: Toolchain (without parser) took 8748.95ms. Allocated memory was 427.8MB in the beginning and 530.6MB in the end (delta: 102.8MB). Free memory was 377.6MB in the beginning and 433.1MB in the end (delta: -55.5MB). Peak memory consumption was 51.0MB. Max. memory is 16.0GB. [2023-11-30 04:57:15,467 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 356.5MB. Free memory is still 311.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:57:15,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 617.10ms. Allocated memory is still 427.8MB. Free memory was 377.6MB in the beginning and 349.1MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-11-30 04:57:15,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.22ms. Allocated memory is still 427.8MB. Free memory was 349.1MB in the beginning and 347.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:57:15,469 INFO L158 Benchmark]: Boogie Preprocessor took 31.68ms. Allocated memory is still 427.8MB. Free memory was 347.0MB in the beginning and 345.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:57:15,469 INFO L158 Benchmark]: RCFGBuilder took 438.84ms. Allocated memory is still 427.8MB. Free memory was 345.0MB in the beginning and 328.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-11-30 04:57:15,469 INFO L158 Benchmark]: TraceAbstraction took 7580.39ms. Allocated memory was 427.8MB in the beginning and 530.6MB in the end (delta: 102.8MB). Free memory was 327.4MB in the beginning and 433.1MB in the end (delta: -105.7MB). Peak memory consumption was 696.3kB. Max. memory is 16.0GB. [2023-11-30 04:57:15,471 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 356.5MB. Free memory is still 311.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 617.10ms. Allocated memory is still 427.8MB. Free memory was 377.6MB in the beginning and 349.1MB in the end (delta: 28.5MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 75.22ms. Allocated memory is still 427.8MB. Free memory was 349.1MB in the beginning and 347.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.68ms. Allocated memory is still 427.8MB. Free memory was 347.0MB in the beginning and 345.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 438.84ms. Allocated memory is still 427.8MB. Free memory was 345.0MB in the beginning and 328.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 7580.39ms. Allocated memory was 427.8MB in the beginning and 530.6MB in the end (delta: 102.8MB). Free memory was 327.4MB in the beginning and 433.1MB in the end (delta: -105.7MB). Peak memory consumption was 696.3kB. 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, 119 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: 7.5s, OverallIterations: 12, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 705 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 705 mSDsluCounter, 239 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 937 IncrementalHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 101 mSDtfsCounter, 937 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 479 GetRequests, 304 SyntacticMatches, 11 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3955occurred in iteration=12, InterpolantAutomatonStates: 125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1005 NumberOfCodeBlocks, 970 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1119 ConstructedInterpolants, 0 QuantifiedInterpolants, 6931 SizeOfPredicates, 22 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 19 InterpolantComputations, 9 PerfectInterpolantSequences, 1540/2045 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 04:57:15,489 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...