/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/pthread-ext/25_stack.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:24:46,450 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:24:46,512 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 04:24:46,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:24:46,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:24:46,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:24:46,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:24:46,545 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:24:46,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:24:46,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:24:46,549 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:24:46,549 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:24:46,549 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:24:46,550 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:24:46,550 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:24:46,550 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:24:46,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:24:46,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:24:46,551 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:24:46,551 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:24:46,551 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:24:46,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:24:46,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:24:46,552 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:24:46,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:24:46,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:24:46,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:24:46,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:24:46,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:24:46,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:24:46,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:24:46,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:24:46,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:24:46,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:24:46,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:24:46,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:24:46,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:24:46,775 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:24:46,777 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:24:46,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/25_stack.i [2023-11-30 04:24:47,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:24:47,951 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:24:47,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/25_stack.i [2023-11-30 04:24:47,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aba642bc5/985b5f2a71ff4a5fb27dbe5e1d5fc9d9/FLAGc9d307179 [2023-11-30 04:24:47,971 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aba642bc5/985b5f2a71ff4a5fb27dbe5e1d5fc9d9 [2023-11-30 04:24:47,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:24:47,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:24:47,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:24:47,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:24:47,978 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:24:47,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:24:47" (1/1) ... [2023-11-30 04:24:47,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114d5853 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:47, skipping insertion in model container [2023-11-30 04:24:47,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:24:47" (1/1) ... [2023-11-30 04:24:48,021 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:24:48,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:24:48,360 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:24:48,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:24:48,450 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:24:48,450 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:24:48,455 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:24:48,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48 WrapperNode [2023-11-30 04:24:48,455 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:24:48,462 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:24:48,462 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:24:48,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:24:48,469 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,537 INFO L138 Inliner]: procedures = 179, calls = 37, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 179 [2023-11-30 04:24:48,537 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:24:48,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:24:48,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:24:48,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:24:48,546 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,546 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,566 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,567 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,581 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:24:48,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:24:48,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:24:48,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:24:48,585 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (1/1) ... [2023-11-30 04:24:48,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:24:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:24:48,607 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 04:24:48,632 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 04:24:48,664 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:24:48,664 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-30 04:24:48,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-30 04:24:48,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:24:48,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:24:48,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:24:48,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:24:48,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:24:48,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:24:48,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:24:48,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:24:48,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:24:48,667 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 04:24:48,822 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:24:48,823 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:24:49,125 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:24:49,298 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:24:49,298 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-30 04:24:49,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:24:49 BoogieIcfgContainer [2023-11-30 04:24:49,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:24:49,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:24:49,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:24:49,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:24:49,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:24:47" (1/3) ... [2023-11-30 04:24:49,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe23d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:24:49, skipping insertion in model container [2023-11-30 04:24:49,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:24:48" (2/3) ... [2023-11-30 04:24:49,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe23d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:24:49, skipping insertion in model container [2023-11-30 04:24:49,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:24:49" (3/3) ... [2023-11-30 04:24:49,306 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack.i [2023-11-30 04:24:49,316 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:24:49,317 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-30 04:24:49,317 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:24:49,362 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:24:49,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 132 transitions, 268 flow [2023-11-30 04:24:49,413 INFO L124 PetriNetUnfolderBase]: 8/145 cut-off events. [2023-11-30 04:24:49,414 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:24:49,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 145 events. 8/145 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 252 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 111. Up to 4 conditions per place. [2023-11-30 04:24:49,417 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 132 transitions, 268 flow [2023-11-30 04:24:49,420 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 132 transitions, 268 flow [2023-11-30 04:24:49,425 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:24:49,429 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;@7fc2d66d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:24:49,429 INFO L363 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-11-30 04:24:49,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:24:49,433 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-11-30 04:24:49,433 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:24:49,433 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:49,433 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] [2023-11-30 04:24:49,434 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-30 04:24:49,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1813666574, now seen corresponding path program 1 times [2023-11-30 04:24:49,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:49,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289941607] [2023-11-30 04:24:49,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:49,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:49,604 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 04:24:49,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289941607] [2023-11-30 04:24:49,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289941607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:49,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:49,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:24:49,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139353120] [2023-11-30 04:24:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:49,611 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:24:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:24:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:24:49,637 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 132 [2023-11-30 04:24:49,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 132 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 04:24:49,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:49,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 132 [2023-11-30 04:24:49,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:24:49,723 INFO L124 PetriNetUnfolderBase]: 52/308 cut-off events. [2023-11-30 04:24:49,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:24:49,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 308 events. 52/308 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1347 event pairs, 40 based on Foata normal form. 22/245 useless extension candidates. Maximal degree in co-relation 390. Up to 112 conditions per place. [2023-11-30 04:24:49,726 INFO L140 encePairwiseOnDemand]: 112/132 looper letters, 31 selfloop transitions, 1 changer transitions 0/107 dead transitions. [2023-11-30 04:24:49,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 282 flow [2023-11-30 04:24:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:24:49,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:24:49,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-11-30 04:24:49,735 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7196969696969697 [2023-11-30 04:24:49,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-11-30 04:24:49,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-11-30 04:24:49,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:24:49,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-11-30 04:24:49,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:24:49,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:24:49,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:24:49,745 INFO L307 CegarLoopForPetriNet]: 128 programPoint places, -20 predicate places. [2023-11-30 04:24:49,745 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 107 transitions, 282 flow [2023-11-30 04:24:49,745 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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 04:24:49,746 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:49,746 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] [2023-11-30 04:24:49,746 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:24:49,746 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-30 04:24:49,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:49,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1813666575, now seen corresponding path program 1 times [2023-11-30 04:24:49,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:49,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124448035] [2023-11-30 04:24:49,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:49,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:49,839 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 04:24:49,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:49,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124448035] [2023-11-30 04:24:49,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124448035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:49,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:49,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:24:49,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361516828] [2023-11-30 04:24:49,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:49,841 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:24:49,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:49,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:24:49,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:24:49,842 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 132 [2023-11-30 04:24:49,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 107 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 04:24:49,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:49,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 132 [2023-11-30 04:24:49,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:24:49,890 INFO L124 PetriNetUnfolderBase]: 28/208 cut-off events. [2023-11-30 04:24:49,890 INFO L125 PetriNetUnfolderBase]: For 25/37 co-relation queries the response was YES. [2023-11-30 04:24:49,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 208 events. 28/208 cut-off events. For 25/37 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 663 event pairs, 20 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 313. Up to 68 conditions per place. [2023-11-30 04:24:49,892 INFO L140 encePairwiseOnDemand]: 130/132 looper letters, 29 selfloop transitions, 1 changer transitions 0/106 dead transitions. [2023-11-30 04:24:49,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 338 flow [2023-11-30 04:24:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:24:49,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:24:49,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-11-30 04:24:49,894 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6767676767676768 [2023-11-30 04:24:49,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-11-30 04:24:49,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-11-30 04:24:49,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:24:49,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-11-30 04:24:49,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 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 04:24:49,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:24:49,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 132.0) internal successors, (528), 4 states have internal predecessors, (528), 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 04:24:49,897 INFO L307 CegarLoopForPetriNet]: 128 programPoint places, -19 predicate places. [2023-11-30 04:24:49,897 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 338 flow [2023-11-30 04:24:49,897 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 04:24:49,897 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:49,897 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] [2023-11-30 04:24:49,897 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:24:49,898 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-30 04:24:49,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:49,898 INFO L85 PathProgramCache]: Analyzing trace with hash 253041161, now seen corresponding path program 1 times [2023-11-30 04:24:49,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:49,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106072660] [2023-11-30 04:24:49,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:49,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:50,032 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 04:24:50,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:50,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106072660] [2023-11-30 04:24:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106072660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:50,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:50,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:24:50,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621435388] [2023-11-30 04:24:50,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:50,033 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:24:50,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:50,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:24:50,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:24:50,035 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 132 [2023-11-30 04:24:50,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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 04:24:50,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:50,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 132 [2023-11-30 04:24:50,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:24:50,100 INFO L124 PetriNetUnfolderBase]: 26/202 cut-off events. [2023-11-30 04:24:50,101 INFO L125 PetriNetUnfolderBase]: For 72/84 co-relation queries the response was YES. [2023-11-30 04:24:50,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 202 events. 26/202 cut-off events. For 72/84 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 629 event pairs, 18 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 354. Up to 65 conditions per place. [2023-11-30 04:24:50,107 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 29 selfloop transitions, 2 changer transitions 0/104 dead transitions. [2023-11-30 04:24:50,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 388 flow [2023-11-30 04:24:50,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:24:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:24:50,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-11-30 04:24:50,109 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6382575757575758 [2023-11-30 04:24:50,109 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-11-30 04:24:50,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-11-30 04:24:50,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:24:50,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-11-30 04:24:50,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 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 04:24:50,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 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 04:24:50,113 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 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 04:24:50,114 INFO L307 CegarLoopForPetriNet]: 128 programPoint places, -18 predicate places. [2023-11-30 04:24:50,114 INFO L500 AbstractCegarLoop]: Abstraction has has 110 places, 104 transitions, 388 flow [2023-11-30 04:24:50,115 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.0) internal successors, (468), 6 states have internal predecessors, (468), 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 04:24:50,115 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:50,115 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] [2023-11-30 04:24:50,115 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:24:50,116 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-30 04:24:50,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:50,117 INFO L85 PathProgramCache]: Analyzing trace with hash 253041162, now seen corresponding path program 1 times [2023-11-30 04:24:50,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:50,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010452060] [2023-11-30 04:24:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:50,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:50,252 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 04:24:50,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:50,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010452060] [2023-11-30 04:24:50,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010452060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:50,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:50,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:24:50,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118299307] [2023-11-30 04:24:50,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:50,254 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:24:50,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:50,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:24:50,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:24:50,255 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 132 [2023-11-30 04:24:50,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 104 transitions, 388 flow. Second operand has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 04:24:50,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:50,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 132 [2023-11-30 04:24:50,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:24:50,306 INFO L124 PetriNetUnfolderBase]: 24/196 cut-off events. [2023-11-30 04:24:50,306 INFO L125 PetriNetUnfolderBase]: For 135/141 co-relation queries the response was YES. [2023-11-30 04:24:50,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 196 events. 24/196 cut-off events. For 135/141 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 588 event pairs, 16 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 383. Up to 59 conditions per place. [2023-11-30 04:24:50,308 INFO L140 encePairwiseOnDemand]: 128/132 looper letters, 25 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-11-30 04:24:50,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 102 transitions, 426 flow [2023-11-30 04:24:50,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:24:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:24:50,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-11-30 04:24:50,309 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2023-11-30 04:24:50,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-11-30 04:24:50,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-11-30 04:24:50,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:24:50,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-11-30 04:24:50,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 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 04:24:50,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 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 04:24:50,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 132.0) internal successors, (660), 5 states have internal predecessors, (660), 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 04:24:50,312 INFO L307 CegarLoopForPetriNet]: 128 programPoint places, -17 predicate places. [2023-11-30 04:24:50,312 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 426 flow [2023-11-30 04:24:50,312 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.0) internal successors, (420), 5 states have internal predecessors, (420), 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 04:24:50,312 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:50,313 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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 04:24:50,313 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:24:50,313 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-11-30 04:24:50,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1350829373, now seen corresponding path program 1 times [2023-11-30 04:24:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044999849] [2023-11-30 04:24:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:50,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:24:50,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 04:24:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:24:50,340 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 04:24:50,340 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 04:24:50,341 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (62 of 63 remaining) [2023-11-30 04:24:50,342 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 63 remaining) [2023-11-30 04:24:50,342 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 63 remaining) [2023-11-30 04:24:50,342 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 63 remaining) [2023-11-30 04:24:50,343 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 63 remaining) [2023-11-30 04:24:50,343 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 63 remaining) [2023-11-30 04:24:50,343 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 63 remaining) [2023-11-30 04:24:50,343 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 63 remaining) [2023-11-30 04:24:50,343 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 63 remaining) [2023-11-30 04:24:50,343 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 63 remaining) [2023-11-30 04:24:50,343 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 63 remaining) [2023-11-30 04:24:50,343 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 63 remaining) [2023-11-30 04:24:50,344 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 63 remaining) [2023-11-30 04:24:50,344 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 63 remaining) [2023-11-30 04:24:50,344 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 63 remaining) [2023-11-30 04:24:50,344 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 63 remaining) [2023-11-30 04:24:50,344 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 63 remaining) [2023-11-30 04:24:50,344 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 63 remaining) [2023-11-30 04:24:50,344 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 63 remaining) [2023-11-30 04:24:50,345 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 63 remaining) [2023-11-30 04:24:50,345 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 63 remaining) [2023-11-30 04:24:50,345 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (41 of 63 remaining) [2023-11-30 04:24:50,345 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 63 remaining) [2023-11-30 04:24:50,345 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 63 remaining) [2023-11-30 04:24:50,345 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 63 remaining) [2023-11-30 04:24:50,345 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 63 remaining) [2023-11-30 04:24:50,346 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (36 of 63 remaining) [2023-11-30 04:24:50,346 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 63 remaining) [2023-11-30 04:24:50,346 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 63 remaining) [2023-11-30 04:24:50,346 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 63 remaining) [2023-11-30 04:24:50,346 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 63 remaining) [2023-11-30 04:24:50,346 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 63 remaining) [2023-11-30 04:24:50,346 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 63 remaining) [2023-11-30 04:24:50,347 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 63 remaining) [2023-11-30 04:24:50,347 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 63 remaining) [2023-11-30 04:24:50,347 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 63 remaining) [2023-11-30 04:24:50,347 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 63 remaining) [2023-11-30 04:24:50,347 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 63 remaining) [2023-11-30 04:24:50,347 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 63 remaining) [2023-11-30 04:24:50,347 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 63 remaining) [2023-11-30 04:24:50,347 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 63 remaining) [2023-11-30 04:24:50,348 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 63 remaining) [2023-11-30 04:24:50,348 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 63 remaining) [2023-11-30 04:24:50,348 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 63 remaining) [2023-11-30 04:24:50,348 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 63 remaining) [2023-11-30 04:24:50,348 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 63 remaining) [2023-11-30 04:24:50,348 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 63 remaining) [2023-11-30 04:24:50,348 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 63 remaining) [2023-11-30 04:24:50,349 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 63 remaining) [2023-11-30 04:24:50,349 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 63 remaining) [2023-11-30 04:24:50,349 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 63 remaining) [2023-11-30 04:24:50,349 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 63 remaining) [2023-11-30 04:24:50,349 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 63 remaining) [2023-11-30 04:24:50,349 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (9 of 63 remaining) [2023-11-30 04:24:50,349 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 63 remaining) [2023-11-30 04:24:50,349 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 63 remaining) [2023-11-30 04:24:50,350 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 63 remaining) [2023-11-30 04:24:50,350 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 63 remaining) [2023-11-30 04:24:50,350 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (4 of 63 remaining) [2023-11-30 04:24:50,350 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 63 remaining) [2023-11-30 04:24:50,350 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 63 remaining) [2023-11-30 04:24:50,350 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 63 remaining) [2023-11-30 04:24:50,350 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 63 remaining) [2023-11-30 04:24:50,351 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:24:50,351 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-30 04:24:50,353 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 04:24:50,353 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 04:24:50,406 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:24:50,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 229 transitions, 468 flow [2023-11-30 04:24:50,432 INFO L124 PetriNetUnfolderBase]: 15/257 cut-off events. [2023-11-30 04:24:50,432 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:24:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 257 events. 15/257 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 711 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 207. Up to 6 conditions per place. [2023-11-30 04:24:50,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 229 transitions, 468 flow [2023-11-30 04:24:50,437 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 229 transitions, 468 flow [2023-11-30 04:24:50,438 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:24:50,438 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;@7fc2d66d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:24:50,438 INFO L363 AbstractCegarLoop]: Starting to check reachability of 93 error locations. [2023-11-30 04:24:50,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:24:50,440 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2023-11-30 04:24:50,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:24:50,440 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:50,440 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] [2023-11-30 04:24:50,440 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-30 04:24:50,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash 729519379, now seen corresponding path program 1 times [2023-11-30 04:24:50,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:50,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046847080] [2023-11-30 04:24:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:50,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:50,459 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 04:24:50,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:50,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046847080] [2023-11-30 04:24:50,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046847080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:50,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:50,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:24:50,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276508751] [2023-11-30 04:24:50,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:50,460 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:24:50,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:50,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:24:50,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:24:50,461 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 229 [2023-11-30 04:24:50,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 229 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 04:24:50,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:50,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 229 [2023-11-30 04:24:50,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:24:51,378 INFO L124 PetriNetUnfolderBase]: 3095/9409 cut-off events. [2023-11-30 04:24:51,378 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-30 04:24:51,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13958 conditions, 9409 events. 3095/9409 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 96603 event pairs, 2344 based on Foata normal form. 699/6760 useless extension candidates. Maximal degree in co-relation 2816. Up to 4474 conditions per place. [2023-11-30 04:24:51,422 INFO L140 encePairwiseOnDemand]: 193/229 looper letters, 54 selfloop transitions, 1 changer transitions 0/187 dead transitions. [2023-11-30 04:24:51,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 187 transitions, 494 flow [2023-11-30 04:24:51,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:24:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:24:51,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-11-30 04:24:51,424 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7248908296943232 [2023-11-30 04:24:51,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-11-30 04:24:51,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-11-30 04:24:51,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:24:51,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-11-30 04:24:51,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 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 04:24:51,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 04:24:51,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 04:24:51,428 INFO L307 CegarLoopForPetriNet]: 221 programPoint places, -35 predicate places. [2023-11-30 04:24:51,429 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 187 transitions, 494 flow [2023-11-30 04:24:51,429 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 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 04:24:51,429 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:51,429 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] [2023-11-30 04:24:51,429 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:24:51,431 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-30 04:24:51,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash 729519380, now seen corresponding path program 1 times [2023-11-30 04:24:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:51,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989683471] [2023-11-30 04:24:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:51,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:51,475 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 04:24:51,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:51,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989683471] [2023-11-30 04:24:51,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989683471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:51,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:51,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:24:51,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967352615] [2023-11-30 04:24:51,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:51,477 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:24:51,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:51,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:24:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:24:51,478 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 229 [2023-11-30 04:24:51,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 187 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 04:24:51,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:51,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 229 [2023-11-30 04:24:51,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:24:52,086 INFO L124 PetriNetUnfolderBase]: 1899/6058 cut-off events. [2023-11-30 04:24:52,086 INFO L125 PetriNetUnfolderBase]: For 657/1749 co-relation queries the response was YES. [2023-11-30 04:24:52,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11773 conditions, 6058 events. 1899/6058 cut-off events. For 657/1749 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 58028 event pairs, 1402 based on Foata normal form. 0/4147 useless extension candidates. Maximal degree in co-relation 2297. Up to 2817 conditions per place. [2023-11-30 04:24:52,117 INFO L140 encePairwiseOnDemand]: 227/229 looper letters, 52 selfloop transitions, 1 changer transitions 0/186 dead transitions. [2023-11-30 04:24:52,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 186 transitions, 596 flow [2023-11-30 04:24:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:24:52,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:24:52,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-11-30 04:24:52,120 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6768558951965066 [2023-11-30 04:24:52,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-11-30 04:24:52,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-11-30 04:24:52,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:24:52,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-11-30 04:24:52,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 04:24:52,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 04:24:52,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 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 04:24:52,125 INFO L307 CegarLoopForPetriNet]: 221 programPoint places, -34 predicate places. [2023-11-30 04:24:52,125 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 186 transitions, 596 flow [2023-11-30 04:24:52,125 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 04:24:52,126 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:52,126 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] [2023-11-30 04:24:52,126 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-30 04:24:52,127 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-30 04:24:52,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:52,127 INFO L85 PathProgramCache]: Analyzing trace with hash 578343561, now seen corresponding path program 1 times [2023-11-30 04:24:52,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:52,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122348652] [2023-11-30 04:24:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:52,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:52,246 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 04:24:52,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:52,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122348652] [2023-11-30 04:24:52,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122348652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:52,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:52,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:24:52,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909948725] [2023-11-30 04:24:52,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:52,247 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:24:52,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:52,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:24:52,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:24:52,248 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 229 [2023-11-30 04:24:52,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 186 transitions, 596 flow. Second operand has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 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 04:24:52,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:52,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 229 [2023-11-30 04:24:52,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:24:52,717 INFO L124 PetriNetUnfolderBase]: 1607/5328 cut-off events. [2023-11-30 04:24:52,717 INFO L125 PetriNetUnfolderBase]: For 1548/2676 co-relation queries the response was YES. [2023-11-30 04:24:52,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12495 conditions, 5328 events. 1607/5328 cut-off events. For 1548/2676 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 50410 event pairs, 1154 based on Foata normal form. 0/3784 useless extension candidates. Maximal degree in co-relation 2618. Up to 2364 conditions per place. [2023-11-30 04:24:52,747 INFO L140 encePairwiseOnDemand]: 223/229 looper letters, 50 selfloop transitions, 2 changer transitions 0/182 dead transitions. [2023-11-30 04:24:52,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 182 transitions, 676 flow [2023-11-30 04:24:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:24:52,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:24:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-11-30 04:24:52,749 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6462882096069869 [2023-11-30 04:24:52,749 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-11-30 04:24:52,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-11-30 04:24:52,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:24:52,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-11-30 04:24:52,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 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 04:24:52,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 04:24:52,752 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 04:24:52,753 INFO L307 CegarLoopForPetriNet]: 221 programPoint places, -35 predicate places. [2023-11-30 04:24:52,753 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 182 transitions, 676 flow [2023-11-30 04:24:52,754 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.0) internal successors, (816), 6 states have internal predecessors, (816), 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 04:24:52,754 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:52,754 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] [2023-11-30 04:24:52,754 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-30 04:24:52,754 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-30 04:24:52,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash 578343562, now seen corresponding path program 1 times [2023-11-30 04:24:52,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:52,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651530585] [2023-11-30 04:24:52,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:52,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:52,896 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 04:24:52,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:52,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651530585] [2023-11-30 04:24:52,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651530585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:52,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:52,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-30 04:24:52,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750502499] [2023-11-30 04:24:52,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:52,897 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-30 04:24:52,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:52,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-30 04:24:52,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-30 04:24:52,898 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 229 [2023-11-30 04:24:52,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 182 transitions, 676 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 04:24:52,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:52,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 229 [2023-11-30 04:24:52,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:24:53,499 INFO L124 PetriNetUnfolderBase]: 1339/4638 cut-off events. [2023-11-30 04:24:53,499 INFO L125 PetriNetUnfolderBase]: For 2536/3190 co-relation queries the response was YES. [2023-11-30 04:24:53,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12503 conditions, 4638 events. 1339/4638 cut-off events. For 2536/3190 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 43679 event pairs, 930 based on Foata normal form. 0/3425 useless extension candidates. Maximal degree in co-relation 2835. Up to 1948 conditions per place. [2023-11-30 04:24:53,536 INFO L140 encePairwiseOnDemand]: 223/229 looper letters, 44 selfloop transitions, 2 changer transitions 0/178 dead transitions. [2023-11-30 04:24:53,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 178 transitions, 736 flow [2023-11-30 04:24:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:24:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:24:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 610 transitions. [2023-11-30 04:24:53,538 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.665938864628821 [2023-11-30 04:24:53,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 610 transitions. [2023-11-30 04:24:53,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 610 transitions. [2023-11-30 04:24:53,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:24:53,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 610 transitions. [2023-11-30 04:24:53,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 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 04:24:53,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 04:24:53,540 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 229.0) internal successors, (1145), 5 states have internal predecessors, (1145), 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 04:24:53,541 INFO L307 CegarLoopForPetriNet]: 221 programPoint places, -36 predicate places. [2023-11-30 04:24:53,541 INFO L500 AbstractCegarLoop]: Abstraction has has 185 places, 178 transitions, 736 flow [2023-11-30 04:24:53,541 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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 04:24:53,541 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:53,541 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 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 04:24:53,541 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-30 04:24:53,541 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-30 04:24:53,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:53,542 INFO L85 PathProgramCache]: Analyzing trace with hash 748695334, now seen corresponding path program 1 times [2023-11-30 04:24:53,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:53,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252378375] [2023-11-30 04:24:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:24:53,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 04:24:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:24:53,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 04:24:53,557 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 04:24:53,557 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (92 of 93 remaining) [2023-11-30 04:24:53,557 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 93 remaining) [2023-11-30 04:24:53,557 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 93 remaining) [2023-11-30 04:24:53,557 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 93 remaining) [2023-11-30 04:24:53,558 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (71 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (66 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 93 remaining) [2023-11-30 04:24:53,559 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 93 remaining) [2023-11-30 04:24:53,560 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 93 remaining) [2023-11-30 04:24:53,561 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (39 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (34 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 93 remaining) [2023-11-30 04:24:53,562 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 93 remaining) [2023-11-30 04:24:53,563 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (9 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 93 remaining) [2023-11-30 04:24:53,564 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (4 of 93 remaining) [2023-11-30 04:24:53,565 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 93 remaining) [2023-11-30 04:24:53,565 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 93 remaining) [2023-11-30 04:24:53,565 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 93 remaining) [2023-11-30 04:24:53,565 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 93 remaining) [2023-11-30 04:24:53,565 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-30 04:24:53,565 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-30 04:24:53,566 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 04:24:53,566 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 04:24:53,620 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:24:53,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 326 transitions, 670 flow [2023-11-30 04:24:53,743 INFO L124 PetriNetUnfolderBase]: 22/369 cut-off events. [2023-11-30 04:24:53,743 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 04:24:53,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 369 events. 22/369 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1305 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-11-30 04:24:53,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 326 transitions, 670 flow [2023-11-30 04:24:53,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 326 transitions, 670 flow [2023-11-30 04:24:53,752 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:24:53,753 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;@7fc2d66d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:24:53,753 INFO L363 AbstractCegarLoop]: Starting to check reachability of 123 error locations. [2023-11-30 04:24:53,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:24:53,754 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2023-11-30 04:24:53,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:24:53,754 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:24:53,755 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] [2023-11-30 04:24:53,755 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 120 more)] === [2023-11-30 04:24:53,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:24:53,755 INFO L85 PathProgramCache]: Analyzing trace with hash 574041625, now seen corresponding path program 1 times [2023-11-30 04:24:53,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:24:53,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315565749] [2023-11-30 04:24:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:24:53,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:24:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:24:53,772 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 04:24:53,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:24:53,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315565749] [2023-11-30 04:24:53,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315565749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:24:53,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:24:53,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:24:53,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42716533] [2023-11-30 04:24:53,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:24:53,773 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:24:53,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:24:53,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:24:53,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:24:53,774 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 326 [2023-11-30 04:24:53,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 326 transitions, 670 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 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 04:24:53,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:24:53,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 326 [2023-11-30 04:24:53,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:25:24,037 INFO L124 PetriNetUnfolderBase]: 116210/285417 cut-off events. [2023-11-30 04:25:24,037 INFO L125 PetriNetUnfolderBase]: For 4357/4357 co-relation queries the response was YES. [2023-11-30 04:25:25,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435627 conditions, 285417 events. 116210/285417 cut-off events. For 4357/4357 co-relation queries the response was YES. Maximal size of possible extension queue 8011. Compared 4197247 event pairs, 87528 based on Foata normal form. 19167/196327 useless extension candidates. Maximal degree in co-relation 13952. Up to 148194 conditions per place. [2023-11-30 04:25:27,304 INFO L140 encePairwiseOnDemand]: 274/326 looper letters, 77 selfloop transitions, 1 changer transitions 0/267 dead transitions. [2023-11-30 04:25:27,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 267 transitions, 708 flow [2023-11-30 04:25:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:25:27,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:25:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-11-30 04:25:27,315 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7269938650306749 [2023-11-30 04:25:27,315 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-11-30 04:25:27,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-11-30 04:25:27,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:25:27,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-11-30 04:25:27,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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 04:25:27,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 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 04:25:27,318 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 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 04:25:27,318 INFO L307 CegarLoopForPetriNet]: 314 programPoint places, -50 predicate places. [2023-11-30 04:25:27,319 INFO L500 AbstractCegarLoop]: Abstraction has has 264 places, 267 transitions, 708 flow [2023-11-30 04:25:27,319 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 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 04:25:27,319 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:25:27,319 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] [2023-11-30 04:25:27,319 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-30 04:25:27,319 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 120 more)] === [2023-11-30 04:25:27,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:25:27,319 INFO L85 PathProgramCache]: Analyzing trace with hash 574041626, now seen corresponding path program 1 times [2023-11-30 04:25:27,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:25:27,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403940450] [2023-11-30 04:25:27,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:25:27,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:25:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:25:27,347 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 04:25:27,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:25:27,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403940450] [2023-11-30 04:25:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403940450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:25:27,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:25:27,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:25:27,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073331002] [2023-11-30 04:25:27,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:25:27,348 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:25:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:25:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:25:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:25:27,349 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 326 [2023-11-30 04:25:27,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 267 transitions, 708 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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 04:25:27,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:25:27,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 326 [2023-11-30 04:25:27,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:25:46,933 INFO L124 PetriNetUnfolderBase]: 73655/185094 cut-off events. [2023-11-30 04:25:46,933 INFO L125 PetriNetUnfolderBase]: For 19529/49971 co-relation queries the response was YES. [2023-11-30 04:25:48,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377010 conditions, 185094 events. 73655/185094 cut-off events. For 19529/49971 co-relation queries the response was YES. Maximal size of possible extension queue 5290. Compared 2625054 event pairs, 54620 based on Foata normal form. 0/120352 useless extension candidates. Maximal degree in co-relation 11760. Up to 94947 conditions per place. [2023-11-30 04:25:49,160 INFO L140 encePairwiseOnDemand]: 324/326 looper letters, 75 selfloop transitions, 1 changer transitions 0/266 dead transitions. [2023-11-30 04:25:49,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 266 transitions, 856 flow [2023-11-30 04:25:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:25:49,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:25:49,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-11-30 04:25:49,161 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6768916155419223 [2023-11-30 04:25:49,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-11-30 04:25:49,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-11-30 04:25:49,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:25:49,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-11-30 04:25:49,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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 04:25:49,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 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 04:25:49,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 326.0) internal successors, (1304), 4 states have internal predecessors, (1304), 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 04:25:49,165 INFO L307 CegarLoopForPetriNet]: 314 programPoint places, -49 predicate places. [2023-11-30 04:25:49,165 INFO L500 AbstractCegarLoop]: Abstraction has has 265 places, 266 transitions, 856 flow [2023-11-30 04:25:49,165 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 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 04:25:49,165 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:25:49,165 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] [2023-11-30 04:25:49,165 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-30 04:25:49,165 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 120 more)] === [2023-11-30 04:25:49,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:25:49,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1284264791, now seen corresponding path program 1 times [2023-11-30 04:25:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:25:49,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120289692] [2023-11-30 04:25:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:25:49,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:25:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:25:49,220 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 04:25:49,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:25:49,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120289692] [2023-11-30 04:25:49,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120289692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:25:49,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:25:49,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:25:49,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090817086] [2023-11-30 04:25:49,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:25:49,221 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:25:49,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:25:49,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:25:49,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:25:49,222 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 326 [2023-11-30 04:25:49,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 266 transitions, 856 flow. Second operand has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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 04:25:49,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:25:49,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 326 [2023-11-30 04:25:49,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:26:05,793 INFO L124 PetriNetUnfolderBase]: 57003/148054 cut-off events. [2023-11-30 04:26:05,794 INFO L125 PetriNetUnfolderBase]: For 39415/68743 co-relation queries the response was YES. [2023-11-30 04:26:06,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368740 conditions, 148054 events. 57003/148054 cut-off events. For 39415/68743 co-relation queries the response was YES. Maximal size of possible extension queue 4161. Compared 2083408 event pairs, 41134 based on Foata normal form. 0/100016 useless extension candidates. Maximal degree in co-relation 12470. Up to 73002 conditions per place. [2023-11-30 04:26:07,729 INFO L140 encePairwiseOnDemand]: 318/326 looper letters, 71 selfloop transitions, 2 changer transitions 0/260 dead transitions. [2023-11-30 04:26:07,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 260 transitions, 966 flow [2023-11-30 04:26:07,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-30 04:26:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-30 04:26:07,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 847 transitions. [2023-11-30 04:26:07,731 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6495398773006135 [2023-11-30 04:26:07,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 847 transitions. [2023-11-30 04:26:07,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 847 transitions. [2023-11-30 04:26:07,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:26:07,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 847 transitions. [2023-11-30 04:26:07,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.75) internal successors, (847), 4 states have internal predecessors, (847), 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 04:26:07,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 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 04:26:07,737 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 326.0) internal successors, (1630), 5 states have internal predecessors, (1630), 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 04:26:07,737 INFO L307 CegarLoopForPetriNet]: 314 programPoint places, -52 predicate places. [2023-11-30 04:26:07,737 INFO L500 AbstractCegarLoop]: Abstraction has has 262 places, 260 transitions, 966 flow [2023-11-30 04:26:07,737 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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 04:26:07,738 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:26:07,738 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] [2023-11-30 04:26:07,738 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-30 04:26:07,738 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 120 more)] === [2023-11-30 04:26:07,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:26:07,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1284264790, now seen corresponding path program 1 times [2023-11-30 04:26:07,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:26:07,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638332665] [2023-11-30 04:26:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:26:07,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:26:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:26:07,845 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 04:26:07,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:26:07,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638332665] [2023-11-30 04:26:07,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638332665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:26:07,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:26:07,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-30 04:26:07,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483279519] [2023-11-30 04:26:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:26:07,846 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-30 04:26:07,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:26:07,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-30 04:26:07,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-30 04:26:07,847 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 326 [2023-11-30 04:26:07,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 260 transitions, 966 flow. Second operand has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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 04:26:07,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:26:07,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 326 [2023-11-30 04:26:07,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:26:21,495 INFO L124 PetriNetUnfolderBase]: 43063/116070 cut-off events. [2023-11-30 04:26:21,496 INFO L125 PetriNetUnfolderBase]: For 57781/74263 co-relation queries the response was YES. [2023-11-30 04:26:22,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336350 conditions, 116070 events. 43063/116070 cut-off events. For 57781/74263 co-relation queries the response was YES. Maximal size of possible extension queue 3560. Compared 1630321 event pairs, 30072 based on Foata normal form. 0/81640 useless extension candidates. Maximal degree in co-relation 12480. Up to 54726 conditions per place. [2023-11-30 04:26:23,117 INFO L140 encePairwiseOnDemand]: 317/326 looper letters, 64 selfloop transitions, 3 changer transitions 0/254 dead transitions. [2023-11-30 04:26:23,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 254 transitions, 1052 flow [2023-11-30 04:26:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 04:26:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 04:26:23,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1033 transitions. [2023-11-30 04:26:23,121 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6337423312883436 [2023-11-30 04:26:23,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1033 transitions. [2023-11-30 04:26:23,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1033 transitions. [2023-11-30 04:26:23,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:26:23,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1033 transitions. [2023-11-30 04:26:23,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.6) internal successors, (1033), 5 states have internal predecessors, (1033), 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 04:26:23,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 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 04:26:23,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 326.0) internal successors, (1956), 6 states have internal predecessors, (1956), 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 04:26:23,143 INFO L307 CegarLoopForPetriNet]: 314 programPoint places, -54 predicate places. [2023-11-30 04:26:23,143 INFO L500 AbstractCegarLoop]: Abstraction has has 260 places, 254 transitions, 1052 flow [2023-11-30 04:26:23,144 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.0) internal successors, (1164), 6 states have internal predecessors, (1164), 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 04:26:23,144 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:26:23,144 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:26:23,144 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-30 04:26:23,144 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 120 more)] === [2023-11-30 04:26:23,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:26:23,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1816963539, now seen corresponding path program 1 times [2023-11-30 04:26:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:26:23,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656991542] [2023-11-30 04:26:23,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:26:23,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:26:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:26:23,171 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 04:26:23,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 04:26:23,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 04:26:23,179 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 04:26:23,179 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (122 of 123 remaining) [2023-11-30 04:26:23,180 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (121 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (120 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (119 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (118 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (117 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (116 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (115 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 123 remaining) [2023-11-30 04:26:23,181 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (101 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (96 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 123 remaining) [2023-11-30 04:26:23,182 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 123 remaining) [2023-11-30 04:26:23,183 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (69 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (64 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 123 remaining) [2023-11-30 04:26:23,184 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 123 remaining) [2023-11-30 04:26:23,185 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (39 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (34 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 123 remaining) [2023-11-30 04:26:23,186 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 123 remaining) [2023-11-30 04:26:23,187 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20ASSERT_VIOLATIONARRAY_INDEX (9 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25ASSERT_VIOLATIONARRAY_INDEX (4 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 123 remaining) [2023-11-30 04:26:23,188 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 123 remaining) [2023-11-30 04:26:23,189 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-30 04:26:23,189 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-30 04:26:23,189 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 04:26:23,189 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-30 04:26:23,253 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:26:23,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 423 transitions, 874 flow [2023-11-30 04:26:23,310 INFO L124 PetriNetUnfolderBase]: 29/481 cut-off events. [2023-11-30 04:26:23,310 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-30 04:26:23,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 481 events. 29/481 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1987 event pairs, 0 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 399. Up to 10 conditions per place. [2023-11-30 04:26:23,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 407 places, 423 transitions, 874 flow [2023-11-30 04:26:23,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 423 transitions, 874 flow [2023-11-30 04:26:23,325 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:26:23,326 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;@7fc2d66d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:26:23,326 INFO L363 AbstractCegarLoop]: Starting to check reachability of 153 error locations. [2023-11-30 04:26:23,327 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:26:23,327 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-11-30 04:26:23,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:26:23,327 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:26:23,327 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] [2023-11-30 04:26:23,327 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 150 more)] === [2023-11-30 04:26:23,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:26:23,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1347233312, now seen corresponding path program 1 times [2023-11-30 04:26:23,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:26:23,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090910090] [2023-11-30 04:26:23,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:26:23,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:26:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:26:23,343 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 04:26:23,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:26:23,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090910090] [2023-11-30 04:26:23,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090910090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:26:23,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:26:23,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:26:23,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827671403] [2023-11-30 04:26:23,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:26:23,344 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:26:23,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:26:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:26:23,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:26:23,345 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 423 [2023-11-30 04:26:23,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 423 transitions, 874 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 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 04:26:23,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:26:23,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 423 [2023-11-30 04:26:23,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand