/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/09-regions_17-arrayloop_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:58:46,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:58:47,056 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 04:58:47,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:58:47,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:58:47,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:58:47,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:58:47,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:58:47,093 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:58:47,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:58:47,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:58:47,097 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:58:47,097 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:58:47,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:58:47,098 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:58:47,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:58:47,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:58:47,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:58:47,099 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:58:47,099 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:58:47,099 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:58:47,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:58:47,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:58:47,100 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:58:47,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:58:47,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:58:47,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:58:47,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:58:47,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:58:47,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:58:47,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:58:47,102 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:58:47,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:58:47,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:58:47,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:58:47,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:58:47,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:58:47,338 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:58:47,338 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:58:47,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i [2023-11-30 04:58:48,438 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:58:48,730 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:58:48,730 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_17-arrayloop_nr.i [2023-11-30 04:58:48,750 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d7d55e0/8f34beaebf5140de82e7dbbcc6221138/FLAG2f1052590 [2023-11-30 04:58:48,763 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d7d55e0/8f34beaebf5140de82e7dbbcc6221138 [2023-11-30 04:58:48,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:58:48,766 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:58:48,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:58:48,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:58:48,772 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:58:48,772 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:58:48" (1/1) ... [2023-11-30 04:58:48,774 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f75f0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:48, skipping insertion in model container [2023-11-30 04:58:48,774 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:58:48" (1/1) ... [2023-11-30 04:58:48,817 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:58:49,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:58:49,245 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:58:49,291 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:58:49,364 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:58:49,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49 WrapperNode [2023-11-30 04:58:49,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:58:49,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:58:49,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:58:49,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:58:49,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,423 INFO L138 Inliner]: procedures = 369, calls = 30, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 125 [2023-11-30 04:58:49,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:58:49,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:58:49,424 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:58:49,424 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:58:49,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,437 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,437 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,446 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,463 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,464 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:58:49,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:58:49,467 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:58:49,467 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:58:49,468 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (1/1) ... [2023-11-30 04:58:49,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:58:49,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:58:49,492 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 04:58:49,500 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 04:58:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:58:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-30 04:58:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:58:49,519 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 04:58:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:58:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:58:49,520 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 04:58:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 04:58:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:58:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-30 04:58:49,521 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-30 04:58:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-30 04:58:49,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:58:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:58:49,523 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 04:58:49,715 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:58:49,717 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:58:49,985 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:58:50,008 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:58:50,008 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-30 04:58:50,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:58:50 BoogieIcfgContainer [2023-11-30 04:58:50,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:58:50,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:58:50,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:58:50,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:58:50,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:58:48" (1/3) ... [2023-11-30 04:58:50,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64458916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:58:50, skipping insertion in model container [2023-11-30 04:58:50,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:58:49" (2/3) ... [2023-11-30 04:58:50,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64458916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:58:50, skipping insertion in model container [2023-11-30 04:58:50,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:58:50" (3/3) ... [2023-11-30 04:58:50,016 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_17-arrayloop_nr.i [2023-11-30 04:58:50,030 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:58:50,030 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-11-30 04:58:50,030 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:58:50,098 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:58:50,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 354 flow [2023-11-30 04:58:50,183 INFO L124 PetriNetUnfolderBase]: 6/174 cut-off events. [2023-11-30 04:58:50,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:58:50,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 174 events. 6/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 412 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 126. Up to 2 conditions per place. [2023-11-30 04:58:50,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 354 flow [2023-11-30 04:58:50,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 174 transitions, 351 flow [2023-11-30 04:58:50,211 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:58:50,216 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;@9d7fdc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:58:50,216 INFO L363 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-11-30 04:58:50,221 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:58:50,222 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-11-30 04:58:50,222 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:58:50,222 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:58:50,222 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:58:50,223 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:58:50,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:58:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1802790074, now seen corresponding path program 1 times [2023-11-30 04:58:50,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:58:50,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232139378] [2023-11-30 04:58:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:50,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:58:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:50,443 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 04:58:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:58:50,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232139378] [2023-11-30 04:58:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232139378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:58:50,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:58:50,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:58:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945713049] [2023-11-30 04:58:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:58:50,452 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:58:50,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:58:50,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:58:50,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:58:50,477 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 175 [2023-11-30 04:58:50,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 174 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 04:58:50,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:58:50,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 175 [2023-11-30 04:58:50,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:58:50,737 INFO L124 PetriNetUnfolderBase]: 49/558 cut-off events. [2023-11-30 04:58:50,737 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 04:58:50,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 558 events. 49/558 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2709 event pairs, 24 based on Foata normal form. 23/451 useless extension candidates. Maximal degree in co-relation 601. Up to 77 conditions per place. [2023-11-30 04:58:50,747 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 40 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2023-11-30 04:58:50,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 189 transitions, 469 flow [2023-11-30 04:58:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:58:50,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:58:50,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 490 transitions. [2023-11-30 04:58:50,764 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2023-11-30 04:58:50,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 490 transitions. [2023-11-30 04:58:50,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 490 transitions. [2023-11-30 04:58:50,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:58:50,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 490 transitions. [2023-11-30 04:58:50,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 04:58:50,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 04:58:50,780 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 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 04:58:50,785 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 2 predicate places. [2023-11-30 04:58:50,785 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 189 transitions, 469 flow [2023-11-30 04:58:50,785 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 04:58:50,786 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:58:50,786 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 04:58:50,786 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:58:50,786 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:58:50,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:58:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1547325968, now seen corresponding path program 1 times [2023-11-30 04:58:50,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:58:50,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8410850] [2023-11-30 04:58:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:50,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:58:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:50,980 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 04:58:50,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:58:50,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8410850] [2023-11-30 04:58:50,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8410850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:58:50,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:58:50,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:58:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702554957] [2023-11-30 04:58:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:58:50,984 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 04:58:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:58:50,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 04:58:50,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 04:58:50,989 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 175 [2023-11-30 04:58:50,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 189 transitions, 469 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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 04:58:50,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:58:50,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 175 [2023-11-30 04:58:50,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:58:51,721 INFO L124 PetriNetUnfolderBase]: 841/2932 cut-off events. [2023-11-30 04:58:51,722 INFO L125 PetriNetUnfolderBase]: For 234/268 co-relation queries the response was YES. [2023-11-30 04:58:51,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5130 conditions, 2932 events. 841/2932 cut-off events. For 234/268 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 22651 event pairs, 535 based on Foata normal form. 13/2352 useless extension candidates. Maximal degree in co-relation 5008. Up to 1206 conditions per place. [2023-11-30 04:58:51,738 INFO L140 encePairwiseOnDemand]: 163/175 looper letters, 111 selfloop transitions, 8 changer transitions 0/236 dead transitions. [2023-11-30 04:58:51,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 236 transitions, 825 flow [2023-11-30 04:58:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 04:58:51,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 04:58:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 645 transitions. [2023-11-30 04:58:51,741 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7371428571428571 [2023-11-30 04:58:51,741 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 645 transitions. [2023-11-30 04:58:51,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 645 transitions. [2023-11-30 04:58:51,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:58:51,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 645 transitions. [2023-11-30 04:58:51,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.0) internal successors, (645), 5 states have internal predecessors, (645), 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 04:58:51,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 04:58:51,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 04:58:51,746 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 2 predicate places. [2023-11-30 04:58:51,747 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 236 transitions, 825 flow [2023-11-30 04:58:51,747 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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 04:58:51,747 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:58:51,747 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 04:58:51,748 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:58:51,748 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:58:51,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:58:51,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1547325967, now seen corresponding path program 1 times [2023-11-30 04:58:51,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:58:51,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335505686] [2023-11-30 04:58:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:51,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:58:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:51,877 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 04:58:51,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:58:51,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335505686] [2023-11-30 04:58:51,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335505686] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:58:51,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:58:51,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:58:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732702205] [2023-11-30 04:58:51,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:58:51,882 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 04:58:51,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:58:51,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 04:58:51,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 04:58:51,887 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 175 [2023-11-30 04:58:51,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 236 transitions, 825 flow. Second operand has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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 04:58:51,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:58:51,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 175 [2023-11-30 04:58:51,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:58:52,588 INFO L124 PetriNetUnfolderBase]: 1266/3980 cut-off events. [2023-11-30 04:58:52,589 INFO L125 PetriNetUnfolderBase]: For 1528/1668 co-relation queries the response was YES. [2023-11-30 04:58:52,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8776 conditions, 3980 events. 1266/3980 cut-off events. For 1528/1668 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 31987 event pairs, 855 based on Foata normal form. 57/3958 useless extension candidates. Maximal degree in co-relation 8635. Up to 1599 conditions per place. [2023-11-30 04:58:52,614 INFO L140 encePairwiseOnDemand]: 163/175 looper letters, 108 selfloop transitions, 8 changer transitions 0/250 dead transitions. [2023-11-30 04:58:52,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 250 transitions, 1077 flow [2023-11-30 04:58:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 04:58:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 04:58:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 649 transitions. [2023-11-30 04:58:52,617 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7417142857142857 [2023-11-30 04:58:52,617 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 649 transitions. [2023-11-30 04:58:52,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 649 transitions. [2023-11-30 04:58:52,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:58:52,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 649 transitions. [2023-11-30 04:58:52,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 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 04:58:52,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 04:58:52,621 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 04:58:52,623 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 2 predicate places. [2023-11-30 04:58:52,623 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 250 transitions, 1077 flow [2023-11-30 04:58:52,623 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.0) internal successors, (444), 4 states have internal predecessors, (444), 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 04:58:52,623 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:58:52,623 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:58:52,623 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:58:52,624 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:58:52,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:58:52,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1443499884, now seen corresponding path program 1 times [2023-11-30 04:58:52,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:58:52,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166610615] [2023-11-30 04:58:52,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:52,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:58:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:52,863 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 04:58:52,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:58:52,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166610615] [2023-11-30 04:58:52,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166610615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:58:52,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:58:52,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-30 04:58:52,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969081937] [2023-11-30 04:58:52,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:58:52,865 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-30 04:58:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:58:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-30 04:58:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-30 04:58:52,867 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 175 [2023-11-30 04:58:52,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 250 transitions, 1077 flow. Second operand has 7 states, 7 states have (on average 103.14285714285714) internal successors, (722), 7 states have internal predecessors, (722), 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 04:58:52,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:58:52,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 175 [2023-11-30 04:58:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:58:53,463 INFO L124 PetriNetUnfolderBase]: 1189/3814 cut-off events. [2023-11-30 04:58:53,464 INFO L125 PetriNetUnfolderBase]: For 3290/3585 co-relation queries the response was YES. [2023-11-30 04:58:53,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10373 conditions, 3814 events. 1189/3814 cut-off events. For 3290/3585 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 30283 event pairs, 809 based on Foata normal form. 131/3858 useless extension candidates. Maximal degree in co-relation 10206. Up to 1961 conditions per place. [2023-11-30 04:58:53,487 INFO L140 encePairwiseOnDemand]: 167/175 looper letters, 147 selfloop transitions, 4 changer transitions 0/274 dead transitions. [2023-11-30 04:58:53,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 274 transitions, 1519 flow [2023-11-30 04:58:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 04:58:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 04:58:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-11-30 04:58:53,490 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-30 04:58:53,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-11-30 04:58:53,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-11-30 04:58:53,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:58:53,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-11-30 04:58:53,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 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 04:58:53,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 04:58:53,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 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 04:58:53,494 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 3 predicate places. [2023-11-30 04:58:53,495 INFO L500 AbstractCegarLoop]: Abstraction has has 175 places, 274 transitions, 1519 flow [2023-11-30 04:58:53,495 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.14285714285714) internal successors, (722), 7 states have internal predecessors, (722), 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 04:58:53,495 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:58:53,495 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:58:53,496 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:58:53,496 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:58:53,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:58:53,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1443499885, now seen corresponding path program 1 times [2023-11-30 04:58:53,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:58:53,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775014323] [2023-11-30 04:58:53,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:53,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:58:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:53,802 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 04:58:53,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:58:53,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775014323] [2023-11-30 04:58:53,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775014323] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:58:53,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:58:53,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-30 04:58:53,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100225784] [2023-11-30 04:58:53,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:58:53,804 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-30 04:58:53,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:58:53,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-30 04:58:53,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-30 04:58:53,805 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 175 [2023-11-30 04:58:53,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 274 transitions, 1519 flow. Second operand has 8 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 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 04:58:53,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:58:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 175 [2023-11-30 04:58:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:58:54,750 INFO L124 PetriNetUnfolderBase]: 1480/4416 cut-off events. [2023-11-30 04:58:54,750 INFO L125 PetriNetUnfolderBase]: For 6762/7639 co-relation queries the response was YES. [2023-11-30 04:58:54,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14532 conditions, 4416 events. 1480/4416 cut-off events. For 6762/7639 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 35726 event pairs, 971 based on Foata normal form. 52/4342 useless extension candidates. Maximal degree in co-relation 14329. Up to 2046 conditions per place. [2023-11-30 04:58:54,781 INFO L140 encePairwiseOnDemand]: 163/175 looper letters, 321 selfloop transitions, 9 changer transitions 0/406 dead transitions. [2023-11-30 04:58:54,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 406 transitions, 3013 flow [2023-11-30 04:58:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-30 04:58:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-30 04:58:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 654 transitions. [2023-11-30 04:58:54,783 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6228571428571429 [2023-11-30 04:58:54,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 654 transitions. [2023-11-30 04:58:54,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 654 transitions. [2023-11-30 04:58:54,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:58:54,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 654 transitions. [2023-11-30 04:58:54,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 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 04:58:54,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 04:58:54,788 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 175.0) internal successors, (1225), 7 states have internal predecessors, (1225), 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 04:58:54,788 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 8 predicate places. [2023-11-30 04:58:54,789 INFO L500 AbstractCegarLoop]: Abstraction has has 180 places, 406 transitions, 3013 flow [2023-11-30 04:58:54,789 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 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 04:58:54,789 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:58:54,789 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:58:54,789 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:58:54,789 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:58:54,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:58:54,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1578536583, now seen corresponding path program 1 times [2023-11-30 04:58:54,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:58:54,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093634714] [2023-11-30 04:58:54,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:54,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:58:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:54,859 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 04:58:54,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:58:54,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093634714] [2023-11-30 04:58:54,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093634714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:58:54,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953069416] [2023-11-30 04:58:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:54,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:58:54,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:58:54,872 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 04:58:54,890 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 04:58:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:54,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 04:58:54,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:58:55,028 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 04:58:55,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:58:55,071 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 04:58:55,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953069416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:58:55,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:58:55,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-30 04:58:55,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029848247] [2023-11-30 04:58:55,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:58:55,073 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 04:58:55,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:58:55,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 04:58:55,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-30 04:58:55,076 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 175 [2023-11-30 04:58:55,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 406 transitions, 3013 flow. Second operand has 10 states, 10 states have (on average 147.4) internal successors, (1474), 10 states have internal predecessors, (1474), 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 04:58:55,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:58:55,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 175 [2023-11-30 04:58:55,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:58:55,893 INFO L124 PetriNetUnfolderBase]: 1480/4413 cut-off events. [2023-11-30 04:58:55,893 INFO L125 PetriNetUnfolderBase]: For 8663/9099 co-relation queries the response was YES. [2023-11-30 04:58:55,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15308 conditions, 4413 events. 1480/4413 cut-off events. For 8663/9099 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 35431 event pairs, 731 based on Foata normal form. 2/4307 useless extension candidates. Maximal degree in co-relation 15005. Up to 2056 conditions per place. [2023-11-30 04:58:55,920 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 60 selfloop transitions, 13 changer transitions 0/417 dead transitions. [2023-11-30 04:58:55,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 417 transitions, 3239 flow [2023-11-30 04:58:55,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:58:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:58:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1360 transitions. [2023-11-30 04:58:55,923 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8634920634920635 [2023-11-30 04:58:55,923 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1360 transitions. [2023-11-30 04:58:55,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1360 transitions. [2023-11-30 04:58:55,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:58:55,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1360 transitions. [2023-11-30 04:58:55,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 151.11111111111111) internal successors, (1360), 9 states have internal predecessors, (1360), 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 04:58:55,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 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 04:58:55,929 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 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 04:58:55,930 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 16 predicate places. [2023-11-30 04:58:55,930 INFO L500 AbstractCegarLoop]: Abstraction has has 188 places, 417 transitions, 3239 flow [2023-11-30 04:58:55,931 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 147.4) internal successors, (1474), 10 states have internal predecessors, (1474), 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 04:58:55,931 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:58:55,931 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:58:55,940 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 04:58:56,136 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-30 04:58:56,137 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:58:56,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:58:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1366560981, now seen corresponding path program 1 times [2023-11-30 04:58:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:58:56,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223723424] [2023-11-30 04:58:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:56,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:58:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:58:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:58:56,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223723424] [2023-11-30 04:58:56,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223723424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:58:56,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13162046] [2023-11-30 04:58:56,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:58:56,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:58:56,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:58:56,695 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 04:58:56,717 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 04:58:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:58:56,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-30 04:58:56,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:58:56,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 04:58:56,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:58:56,947 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-30 04:58:56,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-30 04:58:57,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 04:58:57,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:58:57,283 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-30 04:58:57,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-30 04:58:57,301 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 04:58:57,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 04:58:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:58:57,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:58:57,745 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 04:58:57,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2023-11-30 04:58:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:58:58,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13162046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:58:58,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:58:58,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 28 [2023-11-30 04:58:58,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029101599] [2023-11-30 04:58:58,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:58:58,656 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-30 04:58:58,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:58:58,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-30 04:58:58,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2023-11-30 04:58:58,659 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 175 [2023-11-30 04:58:58,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 417 transitions, 3239 flow. Second operand has 29 states, 29 states have (on average 78.20689655172414) internal successors, (2268), 29 states have internal predecessors, (2268), 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 04:58:58,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:58:58,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 175 [2023-11-30 04:58:58,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:59:00,410 INFO L124 PetriNetUnfolderBase]: 1459/4385 cut-off events. [2023-11-30 04:59:00,411 INFO L125 PetriNetUnfolderBase]: For 12485/13266 co-relation queries the response was YES. [2023-11-30 04:59:00,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 4385 events. 1459/4385 cut-off events. For 12485/13266 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 35146 event pairs, 411 based on Foata normal form. 40/4317 useless extension candidates. Maximal degree in co-relation 17705. Up to 2027 conditions per place. [2023-11-30 04:59:00,444 INFO L140 encePairwiseOnDemand]: 158/175 looper letters, 356 selfloop transitions, 21 changer transitions 0/451 dead transitions. [2023-11-30 04:59:00,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 451 transitions, 4307 flow [2023-11-30 04:59:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-30 04:59:00,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-30 04:59:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1287 transitions. [2023-11-30 04:59:00,449 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5253061224489796 [2023-11-30 04:59:00,449 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1287 transitions. [2023-11-30 04:59:00,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1287 transitions. [2023-11-30 04:59:00,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:59:00,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1287 transitions. [2023-11-30 04:59:00,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 91.92857142857143) internal successors, (1287), 14 states have internal predecessors, (1287), 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 04:59:00,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 175.0) internal successors, (2625), 15 states have internal predecessors, (2625), 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 04:59:00,458 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 175.0) internal successors, (2625), 15 states have internal predecessors, (2625), 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 04:59:00,459 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 28 predicate places. [2023-11-30 04:59:00,460 INFO L500 AbstractCegarLoop]: Abstraction has has 200 places, 451 transitions, 4307 flow [2023-11-30 04:59:00,460 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 78.20689655172414) internal successors, (2268), 29 states have internal predecessors, (2268), 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 04:59:00,461 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:59:00,461 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:59:00,466 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 04:59:00,666 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,SelfDestructingSolverStorable6 [2023-11-30 04:59:00,667 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:59:00,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:59:00,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1329572341, now seen corresponding path program 2 times [2023-11-30 04:59:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:59:00,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817434194] [2023-11-30 04:59:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:59:00,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:59:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:59:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:59:00,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:59:00,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817434194] [2023-11-30 04:59:00,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817434194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:59:00,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731840200] [2023-11-30 04:59:00,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 04:59:00,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:59:00,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:59:00,874 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 04:59:00,899 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 04:59:01,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 04:59:01,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 04:59:01,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-30 04:59:01,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:59:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:59:01,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:59:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:59:01,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731840200] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:59:01,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:59:01,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-30 04:59:01,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775499974] [2023-11-30 04:59:01,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:59:01,211 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-30 04:59:01,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:59:01,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-30 04:59:01,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-30 04:59:01,215 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 175 [2023-11-30 04:59:01,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 451 transitions, 4307 flow. Second operand has 18 states, 18 states have (on average 147.66666666666666) internal successors, (2658), 18 states have internal predecessors, (2658), 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 04:59:01,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:59:01,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 175 [2023-11-30 04:59:01,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:59:02,364 INFO L124 PetriNetUnfolderBase]: 1459/4451 cut-off events. [2023-11-30 04:59:02,364 INFO L125 PetriNetUnfolderBase]: For 15531/16307 co-relation queries the response was YES. [2023-11-30 04:59:02,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19141 conditions, 4451 events. 1459/4451 cut-off events. For 15531/16307 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 35107 event pairs, 395 based on Foata normal form. 4/4347 useless extension candidates. Maximal degree in co-relation 18381. Up to 2057 conditions per place. [2023-11-30 04:59:02,390 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 75 selfloop transitions, 25 changer transitions 0/476 dead transitions. [2023-11-30 04:59:02,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 476 transitions, 4771 flow [2023-11-30 04:59:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-30 04:59:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-30 04:59:02,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3127 transitions. [2023-11-30 04:59:02,396 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8508843537414966 [2023-11-30 04:59:02,397 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3127 transitions. [2023-11-30 04:59:02,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3127 transitions. [2023-11-30 04:59:02,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:59:02,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3127 transitions. [2023-11-30 04:59:02,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 148.9047619047619) internal successors, (3127), 21 states have internal predecessors, (3127), 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 04:59:02,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 175.0) internal successors, (3850), 22 states have internal predecessors, (3850), 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 04:59:02,409 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 175.0) internal successors, (3850), 22 states have internal predecessors, (3850), 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 04:59:02,410 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 48 predicate places. [2023-11-30 04:59:02,410 INFO L500 AbstractCegarLoop]: Abstraction has has 220 places, 476 transitions, 4771 flow [2023-11-30 04:59:02,411 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 147.66666666666666) internal successors, (2658), 18 states have internal predecessors, (2658), 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 04:59:02,411 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:59:02,411 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:59:02,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-30 04:59:02,616 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:59:02,617 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:59:02,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:59:02,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1002786215, now seen corresponding path program 2 times [2023-11-30 04:59:02,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:59:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317205628] [2023-11-30 04:59:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:59:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:59:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:59:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:59:03,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:59:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317205628] [2023-11-30 04:59:03,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317205628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:59:03,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545190825] [2023-11-30 04:59:03,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-30 04:59:03,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:59:03,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:59:03,848 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 04:59:03,868 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 04:59:04,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-30 04:59:04,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 04:59:04,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-30 04:59:04,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:59:04,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 04:59:04,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:59:04,119 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-30 04:59:04,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-30 04:59:04,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 04:59:04,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:59:04,440 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 04:59:04,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 04:59:04,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:59:04,701 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 04:59:04,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 04:59:04,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:59:04,966 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 04:59:04,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 04:59:04,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 04:59:05,063 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:59:05,063 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:59:05,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 04:59:05,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2023-11-30 04:59:05,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 04:59:05,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2023-11-30 04:59:06,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 04:59:06,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2023-11-30 04:59:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:59:06,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545190825] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:59:06,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:59:06,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 14] total 48 [2023-11-30 04:59:06,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450720759] [2023-11-30 04:59:06,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:59:06,997 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-30 04:59:06,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:59:06,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-30 04:59:06,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=2081, Unknown=0, NotChecked=0, Total=2352 [2023-11-30 04:59:07,003 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 175 [2023-11-30 04:59:07,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 476 transitions, 4771 flow. Second operand has 49 states, 49 states have (on average 79.46938775510205) internal successors, (3894), 49 states have internal predecessors, (3894), 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 04:59:07,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:59:07,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 175 [2023-11-30 04:59:07,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:59:10,551 INFO L124 PetriNetUnfolderBase]: 1459/4463 cut-off events. [2023-11-30 04:59:10,551 INFO L125 PetriNetUnfolderBase]: For 20680/21791 co-relation queries the response was YES. [2023-11-30 04:59:10,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22221 conditions, 4463 events. 1459/4463 cut-off events. For 20680/21791 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 35116 event pairs, 395 based on Foata normal form. 21/4376 useless extension candidates. Maximal degree in co-relation 21302. Up to 2063 conditions per place. [2023-11-30 04:59:10,581 INFO L140 encePairwiseOnDemand]: 159/175 looper letters, 389 selfloop transitions, 39 changer transitions 0/503 dead transitions. [2023-11-30 04:59:10,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 503 transitions, 5945 flow [2023-11-30 04:59:10,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-30 04:59:10,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-30 04:59:10,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2569 transitions. [2023-11-30 04:59:10,588 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.48933333333333334 [2023-11-30 04:59:10,588 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2569 transitions. [2023-11-30 04:59:10,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2569 transitions. [2023-11-30 04:59:10,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:59:10,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2569 transitions. [2023-11-30 04:59:10,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 85.63333333333334) internal successors, (2569), 30 states have internal predecessors, (2569), 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 04:59:10,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 175.0) internal successors, (5425), 31 states have internal predecessors, (5425), 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 04:59:10,603 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 175.0) internal successors, (5425), 31 states have internal predecessors, (5425), 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 04:59:10,603 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 77 predicate places. [2023-11-30 04:59:10,603 INFO L500 AbstractCegarLoop]: Abstraction has has 249 places, 503 transitions, 5945 flow [2023-11-30 04:59:10,605 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 79.46938775510205) internal successors, (3894), 49 states have internal predecessors, (3894), 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 04:59:10,605 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:59:10,605 INFO L232 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:59:10,611 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 04:59:10,811 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:59:10,811 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 04:59:10,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:59:10,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1820235501, now seen corresponding path program 3 times [2023-11-30 04:59:10,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:59:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208355416] [2023-11-30 04:59:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:59:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:59:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:59:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:59:11,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:59:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208355416] [2023-11-30 04:59:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208355416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:59:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288401799] [2023-11-30 04:59:11,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-30 04:59:11,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:59:11,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:59:11,425 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:59:11,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-30 05:01:03,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-30 05:01:03,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 05:01:03,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 695 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-30 05:01:03,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 05:01:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:01:03,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 05:01:03,499 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:01:03,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288401799] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 05:01:03,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 05:01:03,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-30 05:01:03,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99467025] [2023-11-30 05:01:03,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 05:01:03,500 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-30 05:01:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:01:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-30 05:01:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-30 05:01:03,504 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 175 [2023-11-30 05:01:03,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 503 transitions, 5945 flow. Second operand has 23 states, 23 states have (on average 147.8695652173913) internal successors, (3401), 23 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:03,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:01:03,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 175 [2023-11-30 05:01:03,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:01:04,679 INFO L124 PetriNetUnfolderBase]: 1459/4539 cut-off events. [2023-11-30 05:01:04,679 INFO L125 PetriNetUnfolderBase]: For 25825/28003 co-relation queries the response was YES. [2023-11-30 05:01:04,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23247 conditions, 4539 events. 1459/4539 cut-off events. For 25825/28003 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 35049 event pairs, 608 based on Foata normal form. 4/4415 useless extension candidates. Maximal degree in co-relation 22009. Up to 2083 conditions per place. [2023-11-30 05:01:04,709 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 83 selfloop transitions, 34 changer transitions 0/521 dead transitions. [2023-11-30 05:01:04,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 521 transitions, 6439 flow [2023-11-30 05:01:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-30 05:01:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-30 05:01:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4448 transitions. [2023-11-30 05:01:04,715 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8472380952380952 [2023-11-30 05:01:04,715 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4448 transitions. [2023-11-30 05:01:04,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4448 transitions. [2023-11-30 05:01:04,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:01:04,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4448 transitions. [2023-11-30 05:01:04,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 148.26666666666668) internal successors, (4448), 30 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:04,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 175.0) internal successors, (5425), 31 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:04,730 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 175.0) internal successors, (5425), 31 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:04,730 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 106 predicate places. [2023-11-30 05:01:04,731 INFO L500 AbstractCegarLoop]: Abstraction has has 278 places, 521 transitions, 6439 flow [2023-11-30 05:01:04,732 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 147.8695652173913) internal successors, (3401), 23 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:04,732 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:01:04,732 INFO L232 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:01:04,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-30 05:01:04,948 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-30 05:01:04,948 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 05:01:04,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:01:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1156613791, now seen corresponding path program 3 times [2023-11-30 05:01:04,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:01:04,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405093454] [2023-11-30 05:01:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:01:04,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:01:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:01:07,202 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:01:07,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:01:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405093454] [2023-11-30 05:01:07,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405093454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 05:01:07,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381300773] [2023-11-30 05:01:07,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-30 05:01:07,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:01:07,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:01:07,204 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 05:01:07,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-30 05:01:33,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-30 05:01:33,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 05:01:33,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 78 conjunts are in the unsatisfiable core [2023-11-30 05:01:33,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 05:01:33,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:33,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:33,237 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-30 05:01:33,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-30 05:01:33,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:33,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:33,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:33,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:33,945 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 05:01:33,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 05:01:33,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:34,262 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-30 05:01:34,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-30 05:01:34,273 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 05:01:34,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 05:01:34,528 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 05:01:34,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 05:01:34,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:34,810 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-30 05:01:34,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-30 05:01:34,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:35,052 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 05:01:35,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 05:01:35,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:35,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:35,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:01:35,491 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 05:01:35,957 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-30 05:01:35,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-11-30 05:01:37,044 INFO L349 Elim1Store]: treesize reduction 14, result has 44.0 percent of original size [2023-11-30 05:01:37,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2023-11-30 05:01:38,058 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-30 05:01:38,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-11-30 05:01:43,246 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-30 05:01:43,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-11-30 05:01:44,377 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-30 05:01:44,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-11-30 05:01:45,322 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-30 05:01:45,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2023-11-30 05:01:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:01:46,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381300773] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 05:01:46,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 05:01:46,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31, 29] total 87 [2023-11-30 05:01:46,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944984651] [2023-11-30 05:01:46,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 05:01:46,572 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-11-30 05:01:46,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:01:46,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-11-30 05:01:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=777, Invalid=6879, Unknown=0, NotChecked=0, Total=7656 [2023-11-30 05:01:46,579 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 175 [2023-11-30 05:01:46,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 521 transitions, 6439 flow. Second operand has 88 states, 88 states have (on average 79.70454545454545) internal successors, (7014), 88 states have internal predecessors, (7014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:46,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:01:46,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 175 [2023-11-30 05:01:46,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:01:52,397 INFO L124 PetriNetUnfolderBase]: 1457/4553 cut-off events. [2023-11-30 05:01:52,397 INFO L125 PetriNetUnfolderBase]: For 32744/35575 co-relation queries the response was YES. [2023-11-30 05:01:52,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26382 conditions, 4553 events. 1457/4553 cut-off events. For 32744/35575 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 35214 event pairs, 607 based on Foata normal form. 54/4479 useless extension candidates. Maximal degree in co-relation 24931. Up to 2090 conditions per place. [2023-11-30 05:01:52,425 INFO L140 encePairwiseOnDemand]: 155/175 looper letters, 408 selfloop transitions, 61 changer transitions 0/544 dead transitions. [2023-11-30 05:01:52,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 544 transitions, 7701 flow [2023-11-30 05:01:52,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-30 05:01:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-30 05:01:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3693 transitions. [2023-11-30 05:01:52,431 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4796103896103896 [2023-11-30 05:01:52,431 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3693 transitions. [2023-11-30 05:01:52,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3693 transitions. [2023-11-30 05:01:52,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:01:52,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3693 transitions. [2023-11-30 05:01:52,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 83.93181818181819) internal successors, (3693), 44 states have internal predecessors, (3693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:52,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 175.0) internal successors, (7875), 45 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:52,446 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 175.0) internal successors, (7875), 45 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:52,447 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 149 predicate places. [2023-11-30 05:01:52,447 INFO L500 AbstractCegarLoop]: Abstraction has has 321 places, 544 transitions, 7701 flow [2023-11-30 05:01:52,449 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 79.70454545454545) internal successors, (7014), 88 states have internal predecessors, (7014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:52,449 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:01:52,449 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:01:52,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-30 05:01:52,665 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:01:52,666 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 05:01:52,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:01:52,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2040280359, now seen corresponding path program 4 times [2023-11-30 05:01:52,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:01:52,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273744574] [2023-11-30 05:01:52,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:01:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:01:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:01:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 720 trivial. 0 not checked. [2023-11-30 05:01:54,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:01:54,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273744574] [2023-11-30 05:01:54,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273744574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 05:01:54,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24762873] [2023-11-30 05:01:54,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-30 05:01:54,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:01:54,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:01:54,051 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 05:01:54,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-30 05:01:54,347 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-30 05:01:54,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 05:01:54,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-30 05:01:54,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 05:01:54,365 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 05:01:54,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:54,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:54,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:54,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:54,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:54,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:54,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:54,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:54,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:54,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:54,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:55,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:55,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:55,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:55,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:55,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:55,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:55,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:01:55,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-30 05:01:55,280 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2023-11-30 05:01:55,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 05:01:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2023-11-30 05:01:56,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24762873] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 05:01:56,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 05:01:56,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-11-30 05:01:56,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293230937] [2023-11-30 05:01:56,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 05:01:56,951 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 05:01:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:01:56,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 05:01:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2023-11-30 05:01:56,952 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 175 [2023-11-30 05:01:56,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 544 transitions, 7701 flow. Second operand has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:56,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:01:56,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 175 [2023-11-30 05:01:56,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:01:58,021 INFO L124 PetriNetUnfolderBase]: 1528/4699 cut-off events. [2023-11-30 05:01:58,022 INFO L125 PetriNetUnfolderBase]: For 42017/43390 co-relation queries the response was YES. [2023-11-30 05:01:58,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29936 conditions, 4699 events. 1528/4699 cut-off events. For 42017/43390 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 36633 event pairs, 357 based on Foata normal form. 32/4626 useless extension candidates. Maximal degree in co-relation 28400. Up to 2379 conditions per place. [2023-11-30 05:01:58,053 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 446 selfloop transitions, 29 changer transitions 0/615 dead transitions. [2023-11-30 05:01:58,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 615 transitions, 9715 flow [2023-11-30 05:01:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 05:01:58,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 05:01:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 581 transitions. [2023-11-30 05:01:58,055 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.664 [2023-11-30 05:01:58,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 581 transitions. [2023-11-30 05:01:58,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 581 transitions. [2023-11-30 05:01:58,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:01:58,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 581 transitions. [2023-11-30 05:01:58,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:58,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:58,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:58,058 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 151 predicate places. [2023-11-30 05:01:58,058 INFO L500 AbstractCegarLoop]: Abstraction has has 323 places, 615 transitions, 9715 flow [2023-11-30 05:01:58,058 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:58,059 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:01:58,059 INFO L232 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:01:58,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-30 05:01:58,265 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:01:58,266 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 05:01:58,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:01:58,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1983946201, now seen corresponding path program 4 times [2023-11-30 05:01:58,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:01:58,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447256018] [2023-11-30 05:01:58,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:01:58,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:01:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:01:59,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 888 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:01:59,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:01:59,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447256018] [2023-11-30 05:01:59,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447256018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 05:01:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718414798] [2023-11-30 05:01:59,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-30 05:01:59,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:01:59,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:01:59,046 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 05:01:59,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-30 05:01:59,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-30 05:01:59,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-30 05:01:59,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 984 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-30 05:01:59,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 05:01:59,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 1060 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:01:59,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-30 05:01:59,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718414798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:01:59,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-30 05:01:59,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 25 [2023-11-30 05:01:59,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471679475] [2023-11-30 05:01:59,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:01:59,581 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-30 05:01:59,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:01:59,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-30 05:01:59,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2023-11-30 05:01:59,584 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 175 [2023-11-30 05:01:59,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 615 transitions, 9715 flow. Second operand has 23 states, 23 states have (on average 147.8695652173913) internal successors, (3401), 23 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:01:59,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:01:59,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 175 [2023-11-30 05:01:59,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:02:00,778 INFO L124 PetriNetUnfolderBase]: 1527/4722 cut-off events. [2023-11-30 05:02:00,778 INFO L125 PetriNetUnfolderBase]: For 46783/49214 co-relation queries the response was YES. [2023-11-30 05:02:00,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30612 conditions, 4722 events. 1527/4722 cut-off events. For 46783/49214 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 36824 event pairs, 606 based on Foata normal form. 4/4597 useless extension candidates. Maximal degree in co-relation 29125. Up to 2372 conditions per place. [2023-11-30 05:02:00,805 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 90 selfloop transitions, 39 changer transitions 0/612 dead transitions. [2023-11-30 05:02:00,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 612 transitions, 9969 flow [2023-11-30 05:02:00,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-30 05:02:00,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-30 05:02:00,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 4877 transitions. [2023-11-30 05:02:00,808 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8445021645021645 [2023-11-30 05:02:00,808 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 4877 transitions. [2023-11-30 05:02:00,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 4877 transitions. [2023-11-30 05:02:00,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:02:00,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 4877 transitions. [2023-11-30 05:02:00,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 147.78787878787878) internal successors, (4877), 33 states have internal predecessors, (4877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:00,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 175.0) internal successors, (5950), 34 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:00,820 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 175.0) internal successors, (5950), 34 states have internal predecessors, (5950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:00,821 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 182 predicate places. [2023-11-30 05:02:00,821 INFO L500 AbstractCegarLoop]: Abstraction has has 354 places, 612 transitions, 9969 flow [2023-11-30 05:02:00,822 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 147.8695652173913) internal successors, (3401), 23 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:00,822 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:02:00,822 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2023-11-30 05:02:00,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-30 05:02:01,029 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-30 05:02:01,029 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 05:02:01,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:02:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 472330954, now seen corresponding path program 1 times [2023-11-30 05:02:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:02:01,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894339803] [2023-11-30 05:02:01,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:02:01,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:02:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:02:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2023-11-30 05:02:01,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:02:01,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894339803] [2023-11-30 05:02:01,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894339803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:02:01,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:02:01,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:02:01,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494497910] [2023-11-30 05:02:01,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:02:01,336 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:02:01,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:02:01,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:02:01,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:02:01,337 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 175 [2023-11-30 05:02:01,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 612 transitions, 9969 flow. Second operand has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:01,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:02:01,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 175 [2023-11-30 05:02:01,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:02:02,576 INFO L124 PetriNetUnfolderBase]: 1568/4780 cut-off events. [2023-11-30 05:02:02,576 INFO L125 PetriNetUnfolderBase]: For 58667/60833 co-relation queries the response was YES. [2023-11-30 05:02:02,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32948 conditions, 4780 events. 1568/4780 cut-off events. For 58667/60833 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 36516 event pairs, 502 based on Foata normal form. 230/4888 useless extension candidates. Maximal degree in co-relation 31415. Up to 2357 conditions per place. [2023-11-30 05:02:02,606 INFO L140 encePairwiseOnDemand]: 169/175 looper letters, 419 selfloop transitions, 18 changer transitions 0/687 dead transitions. [2023-11-30 05:02:02,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 687 transitions, 12457 flow [2023-11-30 05:02:02,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 05:02:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 05:02:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 683 transitions. [2023-11-30 05:02:02,608 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7805714285714286 [2023-11-30 05:02:02,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 683 transitions. [2023-11-30 05:02:02,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 683 transitions. [2023-11-30 05:02:02,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:02:02,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 683 transitions. [2023-11-30 05:02:02,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:02,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:02,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:02,611 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 184 predicate places. [2023-11-30 05:02:02,611 INFO L500 AbstractCegarLoop]: Abstraction has has 356 places, 687 transitions, 12457 flow [2023-11-30 05:02:02,611 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:02,611 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:02:02,611 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2023-11-30 05:02:02,611 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-30 05:02:02,611 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 05:02:02,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:02:02,612 INFO L85 PathProgramCache]: Analyzing trace with hash 472330953, now seen corresponding path program 1 times [2023-11-30 05:02:02,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:02:02,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492416036] [2023-11-30 05:02:02,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:02:02,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:02:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:02:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2023-11-30 05:02:02,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:02:02,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492416036] [2023-11-30 05:02:02,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492416036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:02:02,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:02:02,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:02:02,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732617063] [2023-11-30 05:02:02,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:02:02,780 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:02:02,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:02:02,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:02:02,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:02:02,781 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 175 [2023-11-30 05:02:02,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 687 transitions, 12457 flow. Second operand has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:02,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:02:02,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 175 [2023-11-30 05:02:02,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:02:03,931 INFO L124 PetriNetUnfolderBase]: 1483/4602 cut-off events. [2023-11-30 05:02:03,931 INFO L125 PetriNetUnfolderBase]: For 63151/65051 co-relation queries the response was YES. [2023-11-30 05:02:03,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32892 conditions, 4602 events. 1483/4602 cut-off events. For 63151/65051 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 34854 event pairs, 511 based on Foata normal form. 224/4728 useless extension candidates. Maximal degree in co-relation 31312. Up to 2162 conditions per place. [2023-11-30 05:02:03,963 INFO L140 encePairwiseOnDemand]: 166/175 looper letters, 376 selfloop transitions, 25 changer transitions 0/696 dead transitions. [2023-11-30 05:02:03,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 696 transitions, 13303 flow [2023-11-30 05:02:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 05:02:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 05:02:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 680 transitions. [2023-11-30 05:02:03,965 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7771428571428571 [2023-11-30 05:02:03,965 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 680 transitions. [2023-11-30 05:02:03,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 680 transitions. [2023-11-30 05:02:03,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:02:03,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 680 transitions. [2023-11-30 05:02:03,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.0) internal successors, (680), 5 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:03,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:03,966 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 175.0) internal successors, (1050), 6 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:03,967 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 188 predicate places. [2023-11-30 05:02:03,967 INFO L500 AbstractCegarLoop]: Abstraction has has 360 places, 696 transitions, 13303 flow [2023-11-30 05:02:03,967 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:03,967 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:02:03,967 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2023-11-30 05:02:03,968 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-30 05:02:03,968 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 05:02:03,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:02:03,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1335137551, now seen corresponding path program 1 times [2023-11-30 05:02:03,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:02:03,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070499537] [2023-11-30 05:02:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:02:03,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:02:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:02:05,010 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 696 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:02:05,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:02:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070499537] [2023-11-30 05:02:05,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070499537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 05:02:05,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930617519] [2023-11-30 05:02:05,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:02:05,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:02:05,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:02:05,011 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 05:02:05,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-30 05:02:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:02:05,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 1077 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-30 05:02:05,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 05:02:06,127 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 05:02:06,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 05:02:06,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-30 05:02:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 864 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:02:06,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 05:02:06,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2023-11-30 05:02:06,449 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 05:02:06,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 64 [2023-11-30 05:02:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 864 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:02:07,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930617519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 05:02:07,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 05:02:07,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 24] total 69 [2023-11-30 05:02:07,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470931494] [2023-11-30 05:02:07,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 05:02:07,282 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-11-30 05:02:07,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:02:07,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-11-30 05:02:07,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=3927, Unknown=0, NotChecked=0, Total=4830 [2023-11-30 05:02:07,288 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 175 [2023-11-30 05:02:07,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 696 transitions, 13303 flow. Second operand has 70 states, 70 states have (on average 77.7) internal successors, (5439), 70 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:07,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:02:07,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 175 [2023-11-30 05:02:07,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:02:13,380 INFO L124 PetriNetUnfolderBase]: 3501/10193 cut-off events. [2023-11-30 05:02:13,380 INFO L125 PetriNetUnfolderBase]: For 149239/151704 co-relation queries the response was YES. [2023-11-30 05:02:13,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75154 conditions, 10193 events. 3501/10193 cut-off events. For 149239/151704 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 85260 event pairs, 369 based on Foata normal form. 143/10162 useless extension candidates. Maximal degree in co-relation 73471. Up to 4477 conditions per place. [2023-11-30 05:02:13,444 INFO L140 encePairwiseOnDemand]: 156/175 looper letters, 1196 selfloop transitions, 152 changer transitions 3/1464 dead transitions. [2023-11-30 05:02:13,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1464 transitions, 29963 flow [2023-11-30 05:02:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-30 05:02:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-11-30 05:02:13,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 5032 transitions. [2023-11-30 05:02:13,449 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.48736077481840195 [2023-11-30 05:02:13,449 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 5032 transitions. [2023-11-30 05:02:13,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 5032 transitions. [2023-11-30 05:02:13,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:02:13,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 5032 transitions. [2023-11-30 05:02:13,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 85.28813559322033) internal successors, (5032), 59 states have internal predecessors, (5032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:13,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 175.0) internal successors, (10500), 60 states have internal predecessors, (10500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:13,464 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 175.0) internal successors, (10500), 60 states have internal predecessors, (10500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:13,464 INFO L307 CegarLoopForPetriNet]: 172 programPoint places, 246 predicate places. [2023-11-30 05:02:13,464 INFO L500 AbstractCegarLoop]: Abstraction has has 418 places, 1464 transitions, 29963 flow [2023-11-30 05:02:13,465 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 77.7) internal successors, (5439), 70 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:02:13,465 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:02:13,465 INFO L232 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2023-11-30 05:02:13,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-30 05:02:13,666 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-30 05:02:13,666 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-11-30 05:02:13,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:02:13,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1115136510, now seen corresponding path program 1 times [2023-11-30 05:02:13,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:02:13,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738539609] [2023-11-30 05:02:13,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:02:13,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:02:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:02:22,826 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 270 proven. 640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:02:22,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:02:22,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738539609] [2023-11-30 05:02:22,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738539609] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 05:02:22,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315409906] [2023-11-30 05:02:22,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:02:22,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 05:02:22,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:02:22,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 05:02:22,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-30 05:02:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:02:23,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 185 conjunts are in the unsatisfiable core [2023-11-30 05:02:23,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 05:02:23,329 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-30 05:02:23,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-30 05:02:23,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2023-11-30 05:02:23,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-11-30 05:02:23,941 INFO L349 Elim1Store]: treesize reduction 64, result has 29.7 percent of original size [2023-11-30 05:02:23,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 36 [2023-11-30 05:02:24,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-30 05:02:24,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2023-11-30 05:02:24,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:24,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2023-11-30 05:02:24,672 INFO L349 Elim1Store]: treesize reduction 84, result has 30.0 percent of original size [2023-11-30 05:02:24,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 33 treesize of output 48 [2023-11-30 05:02:24,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-30 05:02:25,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-30 05:02:25,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:25,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2023-11-30 05:02:25,819 INFO L349 Elim1Store]: treesize reduction 104, result has 30.2 percent of original size [2023-11-30 05:02:25,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 38 treesize of output 60 [2023-11-30 05:02:26,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 31 [2023-11-30 05:02:26,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 31 [2023-11-30 05:02:26,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:26,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2023-11-30 05:02:27,467 INFO L349 Elim1Store]: treesize reduction 124, result has 30.3 percent of original size [2023-11-30 05:02:27,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 72 [2023-11-30 05:02:27,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 37 [2023-11-30 05:02:27,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 37 [2023-11-30 05:02:28,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:28,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2023-11-30 05:02:28,888 INFO L349 Elim1Store]: treesize reduction 124, result has 30.3 percent of original size [2023-11-30 05:02:28,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 43 treesize of output 72 [2023-11-30 05:02:29,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 37 [2023-11-30 05:02:29,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 37 [2023-11-30 05:02:30,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:30,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 29 [2023-11-30 05:02:31,021 INFO L349 Elim1Store]: treesize reduction 144, result has 30.4 percent of original size [2023-11-30 05:02:31,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 48 treesize of output 84 [2023-11-30 05:02:31,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2023-11-30 05:02:32,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 43 [2023-11-30 05:02:32,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:32,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 33 [2023-11-30 05:02:34,133 INFO L349 Elim1Store]: treesize reduction 164, result has 30.5 percent of original size [2023-11-30 05:02:34,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 20 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 53 treesize of output 96 [2023-11-30 05:02:35,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 49 [2023-11-30 05:02:35,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 49 [2023-11-30 05:02:37,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:37,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 43 [2023-11-30 05:02:40,209 INFO L349 Elim1Store]: treesize reduction 202, result has 31.5 percent of original size [2023-11-30 05:02:40,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 27 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 17 case distinctions, treesize of input 64 treesize of output 120 [2023-11-30 05:02:41,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 124 [2023-11-30 05:02:42,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 124 [2023-11-30 05:02:48,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:48,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:48,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:02:48,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 83 [2023-11-30 05:03:05,708 INFO L349 Elim1Store]: treesize reduction 222, result has 31.5 percent of original size [2023-11-30 05:03:05,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 35 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 19 case distinctions, treesize of input 69 treesize of output 132 [2023-11-30 05:03:14,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 138 [2023-11-30 05:03:19,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 138 [2023-11-30 05:04:02,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:04:02,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:04:02,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:04:02,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 91 [2023-11-30 05:04:44,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 138 [2023-11-30 05:05:27,909 INFO L349 Elim1Store]: treesize reduction 242, result has 31.4 percent of original size [2023-11-30 05:05:27,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 44 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 74 treesize of output 144 [2023-11-30 05:05:53,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 152 [2023-11-30 05:06:00,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 152 [2023-11-30 05:06:22,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-30 05:06:22,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 86 [2023-11-30 05:06:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 689 proven. 221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:06:26,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 05:12:25,227 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,228 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,228 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,229 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,231 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,233 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,235 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,237 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,240 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,242 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 05:12:25,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 164 [2023-11-30 05:12:25,293 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-30 05:12:25,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-11-30 05:12:27,473 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-30 05:12:27,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 193290305542 treesize of output 193273528328 [2023-11-30 05:12:31,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 39 Received shutdown request... [2023-11-30 05:12:50,222 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 51 remaining) [2023-11-30 05:12:50,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-30 05:12:50,233 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 05:12:50,233 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 05:12:50,424 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-30 05:12:50,424 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. [2023-11-30 05:12:50,426 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 51 remaining) [2023-11-30 05:12:50,427 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 51 remaining) [2023-11-30 05:12:50,427 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 51 remaining) [2023-11-30 05:12:50,427 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 51 remaining) [2023-11-30 05:12:50,428 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 51 remaining) [2023-11-30 05:12:50,428 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 51 remaining) [2023-11-30 05:12:50,430 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 51 remaining) [2023-11-30 05:12:50,430 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 51 remaining) [2023-11-30 05:12:50,430 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 51 remaining) [2023-11-30 05:12:50,431 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 51 remaining) [2023-11-30 05:12:50,431 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 51 remaining) [2023-11-30 05:12:50,431 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 51 remaining) [2023-11-30 05:12:50,431 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 51 remaining) [2023-11-30 05:12:50,431 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 51 remaining) [2023-11-30 05:12:50,431 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 51 remaining) [2023-11-30 05:12:50,431 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 51 remaining) [2023-11-30 05:12:50,432 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 51 remaining) [2023-11-30 05:12:50,432 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 51 remaining) [2023-11-30 05:12:50,432 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 51 remaining) [2023-11-30 05:12:50,432 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 51 remaining) [2023-11-30 05:12:50,432 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 51 remaining) [2023-11-30 05:12:50,432 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 51 remaining) [2023-11-30 05:12:50,433 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 51 remaining) [2023-11-30 05:12:50,433 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 51 remaining) [2023-11-30 05:12:50,433 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 51 remaining) [2023-11-30 05:12:50,433 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 51 remaining) [2023-11-30 05:12:50,433 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 51 remaining) [2023-11-30 05:12:50,433 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 51 remaining) [2023-11-30 05:12:50,434 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 51 remaining) [2023-11-30 05:12:50,434 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 51 remaining) [2023-11-30 05:12:50,434 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 51 remaining) [2023-11-30 05:12:50,434 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 51 remaining) [2023-11-30 05:12:50,434 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 51 remaining) [2023-11-30 05:12:50,434 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 51 remaining) [2023-11-30 05:12:50,434 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 51 remaining) [2023-11-30 05:12:50,435 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 51 remaining) [2023-11-30 05:12:50,435 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 51 remaining) [2023-11-30 05:12:50,435 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 51 remaining) [2023-11-30 05:12:50,435 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 51 remaining) [2023-11-30 05:12:50,435 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 51 remaining) [2023-11-30 05:12:50,435 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 51 remaining) [2023-11-30 05:12:50,436 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 51 remaining) [2023-11-30 05:12:50,436 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 51 remaining) [2023-11-30 05:12:50,436 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 51 remaining) [2023-11-30 05:12:50,436 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 51 remaining) [2023-11-30 05:12:50,436 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 51 remaining) [2023-11-30 05:12:50,436 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 51 remaining) [2023-11-30 05:12:50,436 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 51 remaining) [2023-11-30 05:12:50,437 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 51 remaining) [2023-11-30 05:12:50,437 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 51 remaining) [2023-11-30 05:12:50,437 INFO L457 BasicCegarLoop]: Path program histogram: [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:12:50,445 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:12:50,446 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:12:50,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:12:50 BasicIcfg [2023-11-30 05:12:50,449 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:12:50,449 INFO L158 Benchmark]: Toolchain (without parser) took 841683.30ms. Allocated memory was 354.4MB in the beginning and 2.0GB in the end (delta: 1.6GB). Free memory was 294.1MB in the beginning and 1.3GB in the end (delta: -967.5MB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-11-30 05:12:50,450 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory was 302.5MB in the beginning and 302.3MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:12:50,450 INFO L158 Benchmark]: CACSL2BoogieTranslator took 597.38ms. Allocated memory was 354.4MB in the beginning and 505.4MB in the end (delta: 151.0MB). Free memory was 293.7MB in the beginning and 462.8MB in the end (delta: -169.0MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. [2023-11-30 05:12:50,450 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.12ms. Allocated memory is still 505.4MB. Free memory was 462.8MB in the beginning and 460.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:12:50,452 INFO L158 Benchmark]: Boogie Preprocessor took 42.54ms. Allocated memory is still 505.4MB. Free memory was 460.6MB in the beginning and 458.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:12:50,454 INFO L158 Benchmark]: RCFGBuilder took 542.50ms. Allocated memory is still 505.4MB. Free memory was 457.5MB in the beginning and 429.2MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-11-30 05:12:50,454 INFO L158 Benchmark]: TraceAbstraction took 840437.87ms. Allocated memory was 505.4MB in the beginning and 2.0GB in the end (delta: 1.5GB). Free memory was 428.2MB in the beginning and 1.3GB in the end (delta: -833.4MB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-11-30 05:12:50,456 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory was 302.5MB in the beginning and 302.3MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 597.38ms. Allocated memory was 354.4MB in the beginning and 505.4MB in the end (delta: 151.0MB). Free memory was 293.7MB in the beginning and 462.8MB in the end (delta: -169.0MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.12ms. Allocated memory is still 505.4MB. Free memory was 462.8MB in the beginning and 460.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.54ms. Allocated memory is still 505.4MB. Free memory was 460.6MB in the beginning and 458.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 542.50ms. Allocated memory is still 505.4MB. Free memory was 457.5MB in the beginning and 429.2MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * TraceAbstraction took 840437.87ms. Allocated memory was 505.4MB in the beginning and 2.0GB in the end (delta: 1.5GB). Free memory was 428.2MB in the beginning and 1.3GB in the end (delta: -833.4MB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: 1257]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - TimeoutResultAtElement [Line: -1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while CegarLoopForPetriNet was analyzing trace of length 245 with TraceHistMax 10,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-38-8-2-2-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 224 locations, 51 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: 840.3s, OverallIterations: 17, TraceHistogramMax: 11, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 29.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6176 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6176 mSDsluCounter, 2517 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2090 mSDsCounter, 412 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14145 IncrementalHoareTripleChecker+Invalid, 14557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 412 mSolverCounterUnsat, 427 mSDtfsCounter, 14145 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2678 GetRequests, 2139 SyntacticMatches, 32 SemanticMatches, 507 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12123 ImplicationChecksByTransitivity, 20.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29963occurred in iteration=16, InterpolantAutomatonStates: 279, 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: 0.3s SsaConstructionTime, 138.1s SatisfiabilityAnalysisTime, 32.5s InterpolantComputationTime, 3134 NumberOfCodeBlocks, 3109 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 4142 ConstructedInterpolants, 473 QuantifiedInterpolants, 43600 SizeOfPredicates, 145 NumberOfNonLiveVariables, 5509 ConjunctsInSsa, 265 ConjunctsInUnsatCore, 33 InterpolantComputations, 8 PerfectInterpolantSequences, 8478/12841 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown