/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-wmm/mix010.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:43:20,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:43:20,537 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 04:43:20,575 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:43:20,576 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:43:20,576 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:43:20,579 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:43:20,580 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:43:20,580 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:43:20,584 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:43:20,584 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:43:20,584 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:43:20,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:43:20,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:43:20,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:43:20,586 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:43:20,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:43:20,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:43:20,587 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:43:20,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:43:20,587 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:43:20,588 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:43:20,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:43:20,588 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:43:20,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:43:20,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:43:20,589 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:43:20,589 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:43:20,589 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:43:20,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:43:20,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:43:20,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:43:20,590 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:43:20,590 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:43:20,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:43:20,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:43:20,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:43:20,841 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:43:20,842 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:43:20,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2023-11-30 04:43:22,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:43:22,288 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:43:22,289 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix010.oepc.i [2023-11-30 04:43:22,300 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34957a9c2/e7ecf629459f4e5f918a9a456516c0be/FLAG7cd0fed2e [2023-11-30 04:43:22,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34957a9c2/e7ecf629459f4e5f918a9a456516c0be [2023-11-30 04:43:22,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:43:22,318 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:43:22,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:43:22,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:43:22,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:43:22,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@391fd4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22, skipping insertion in model container [2023-11-30 04:43:22,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,379 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:43:22,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:43:22,737 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:43:22,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:43:22,847 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:43:22,847 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:43:22,855 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:43:22,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22 WrapperNode [2023-11-30 04:43:22,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:43:22,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:43:22,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:43:22,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:43:22,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,935 INFO L138 Inliner]: procedures = 176, calls = 61, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2023-11-30 04:43:22,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:43:22,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:43:22,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:43:22,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:43:22,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,957 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,967 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,969 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,971 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,972 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,975 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:43:22,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:43:22,976 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:43:22,976 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:43:22,990 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (1/1) ... [2023-11-30 04:43:22,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:43:23,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:43:23,013 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 04:43:23,019 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 04:43:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:43:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:43:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:43:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:43:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:43:23,033 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-30 04:43:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-30 04:43:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-30 04:43:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-30 04:43:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-30 04:43:23,034 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-30 04:43:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:43:23,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:43:23,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:43:23,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:43:23,036 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 04:43:23,145 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:43:23,147 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:43:23,418 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:43:23,547 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:43:23,547 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 04:43:23,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:43:23 BoogieIcfgContainer [2023-11-30 04:43:23,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:43:23,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:43:23,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:43:23,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:43:23,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:43:22" (1/3) ... [2023-11-30 04:43:23,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6886a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:43:23, skipping insertion in model container [2023-11-30 04:43:23,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:43:22" (2/3) ... [2023-11-30 04:43:23,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6886a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:43:23, skipping insertion in model container [2023-11-30 04:43:23,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:43:23" (3/3) ... [2023-11-30 04:43:23,559 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.oepc.i [2023-11-30 04:43:23,572 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:43:23,572 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-30 04:43:23,572 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:43:23,650 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:43:23,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 127 transitions, 266 flow [2023-11-30 04:43:23,726 INFO L124 PetriNetUnfolderBase]: 3/124 cut-off events. [2023-11-30 04:43:23,726 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:43:23,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 124 events. 3/124 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-11-30 04:43:23,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 127 transitions, 266 flow [2023-11-30 04:43:23,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 160 flow [2023-11-30 04:43:23,744 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:43:23,750 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;@3d66e32e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:43:23,750 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-30 04:43:23,759 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:43:23,760 INFO L124 PetriNetUnfolderBase]: 0/42 cut-off events. [2023-11-30 04:43:23,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:43:23,760 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:43:23,761 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:43:23,761 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:43:23,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:43:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1867749788, now seen corresponding path program 1 times [2023-11-30 04:43:23,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:43:23,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767728006] [2023-11-30 04:43:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:43:23,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:43:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:43:24,136 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 04:43:24,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:43:24,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767728006] [2023-11-30 04:43:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767728006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:43:24,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:43:24,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:43:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753703055] [2023-11-30 04:43:24,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:43:24,147 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:43:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:43:24,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:43:24,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:43:24,174 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 127 [2023-11-30 04:43:24,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 77 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:43:24,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 127 [2023-11-30 04:43:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:43:24,298 INFO L124 PetriNetUnfolderBase]: 24/167 cut-off events. [2023-11-30 04:43:24,298 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:43:24,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 167 events. 24/167 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 511 event pairs, 24 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 182. Up to 57 conditions per place. [2023-11-30 04:43:24,302 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 16 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-11-30 04:43:24,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 192 flow [2023-11-30 04:43:24,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:43:24,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:43:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-11-30 04:43:24,320 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7952755905511811 [2023-11-30 04:43:24,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-11-30 04:43:24,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-11-30 04:43:24,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:43:24,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-11-30 04:43:24,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,342 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 1 predicate places. [2023-11-30 04:43:24,342 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 192 flow [2023-11-30 04:43:24,342 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,342 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:43:24,342 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:43:24,343 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:43:24,343 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:43:24,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:43:24,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1867749787, now seen corresponding path program 1 times [2023-11-30 04:43:24,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:43:24,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150759876] [2023-11-30 04:43:24,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:43:24,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:43:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:43:24,553 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 04:43:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:43:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150759876] [2023-11-30 04:43:24,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150759876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:43:24,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:43:24,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:43:24,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664277294] [2023-11-30 04:43:24,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:43:24,556 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:43:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:43:24,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:43:24,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:43:24,558 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2023-11-30 04:43:24,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:43:24,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2023-11-30 04:43:24,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:43:24,646 INFO L124 PetriNetUnfolderBase]: 33/181 cut-off events. [2023-11-30 04:43:24,646 INFO L125 PetriNetUnfolderBase]: For 40/48 co-relation queries the response was YES. [2023-11-30 04:43:24,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 181 events. 33/181 cut-off events. For 40/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 630 event pairs, 33 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 268. Up to 65 conditions per place. [2023-11-30 04:43:24,651 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 14 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-11-30 04:43:24,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 75 transitions, 218 flow [2023-11-30 04:43:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:43:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:43:24,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-11-30 04:43:24,654 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8136482939632546 [2023-11-30 04:43:24,654 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-11-30 04:43:24,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-11-30 04:43:24,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:43:24,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-11-30 04:43:24,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,660 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 2 predicate places. [2023-11-30 04:43:24,660 INFO L500 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 218 flow [2023-11-30 04:43:24,661 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,661 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:43:24,661 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:43:24,661 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:43:24,662 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:43:24,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:43:24,662 INFO L85 PathProgramCache]: Analyzing trace with hash -745581911, now seen corresponding path program 1 times [2023-11-30 04:43:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:43:24,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281301723] [2023-11-30 04:43:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:43:24,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:43:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:43:24,822 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 04:43:24,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:43:24,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281301723] [2023-11-30 04:43:24,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281301723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:43:24,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:43:24,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:43:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752387692] [2023-11-30 04:43:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:43:24,828 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:43:24,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:43:24,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:43:24,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:43:24,829 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2023-11-30 04:43:24,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:43:24,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2023-11-30 04:43:24,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:43:24,937 INFO L124 PetriNetUnfolderBase]: 31/164 cut-off events. [2023-11-30 04:43:24,938 INFO L125 PetriNetUnfolderBase]: For 99/111 co-relation queries the response was YES. [2023-11-30 04:43:24,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 164 events. 31/164 cut-off events. For 99/111 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 491 event pairs, 9 based on Foata normal form. 3/164 useless extension candidates. Maximal degree in co-relation 304. Up to 63 conditions per place. [2023-11-30 04:43:24,939 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 16 selfloop transitions, 1 changer transitions 0/76 dead transitions. [2023-11-30 04:43:24,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 76 transitions, 260 flow [2023-11-30 04:43:24,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:43:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:43:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-11-30 04:43:24,942 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8188976377952756 [2023-11-30 04:43:24,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-11-30 04:43:24,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-11-30 04:43:24,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:43:24,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-11-30 04:43:24,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,945 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 3 predicate places. [2023-11-30 04:43:24,945 INFO L500 AbstractCegarLoop]: Abstraction has has 87 places, 76 transitions, 260 flow [2023-11-30 04:43:24,946 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,946 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:43:24,946 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:43:24,946 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:43:24,946 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:43:24,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:43:24,947 INFO L85 PathProgramCache]: Analyzing trace with hash -745581912, now seen corresponding path program 1 times [2023-11-30 04:43:24,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:43:24,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684741883] [2023-11-30 04:43:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:43:24,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:43:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:43:24,995 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 04:43:24,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:43:24,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684741883] [2023-11-30 04:43:24,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684741883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:43:24,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:43:24,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:43:24,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340165873] [2023-11-30 04:43:24,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:43:24,997 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:43:24,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:43:24,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:43:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:43:24,998 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 127 [2023-11-30 04:43:24,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 76 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:24,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:43:24,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 127 [2023-11-30 04:43:24,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:43:25,057 INFO L124 PetriNetUnfolderBase]: 29/159 cut-off events. [2023-11-30 04:43:25,057 INFO L125 PetriNetUnfolderBase]: For 177/195 co-relation queries the response was YES. [2023-11-30 04:43:25,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 159 events. 29/159 cut-off events. For 177/195 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 456 event pairs, 9 based on Foata normal form. 3/159 useless extension candidates. Maximal degree in co-relation 342. Up to 58 conditions per place. [2023-11-30 04:43:25,059 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 16 selfloop transitions, 1 changer transitions 0/75 dead transitions. [2023-11-30 04:43:25,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 75 transitions, 288 flow [2023-11-30 04:43:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:43:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:43:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-11-30 04:43:25,061 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7952755905511811 [2023-11-30 04:43:25,061 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-11-30 04:43:25,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-11-30 04:43:25,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:43:25,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-11-30 04:43:25,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,064 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,065 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 4 predicate places. [2023-11-30 04:43:25,065 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 288 flow [2023-11-30 04:43:25,066 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,066 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:43:25,066 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:43:25,066 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:43:25,067 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:43:25,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:43:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1326043191, now seen corresponding path program 1 times [2023-11-30 04:43:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:43:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688737259] [2023-11-30 04:43:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:43:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:43:25,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:43:25,133 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 04:43:25,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:43:25,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688737259] [2023-11-30 04:43:25,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688737259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:43:25,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:43:25,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:43:25,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058901728] [2023-11-30 04:43:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:43:25,134 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:43:25,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:43:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:43:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:43:25,136 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 127 [2023-11-30 04:43:25,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:43:25,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 127 [2023-11-30 04:43:25,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:43:25,190 INFO L124 PetriNetUnfolderBase]: 22/146 cut-off events. [2023-11-30 04:43:25,190 INFO L125 PetriNetUnfolderBase]: For 247/271 co-relation queries the response was YES. [2023-11-30 04:43:25,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 146 events. 22/146 cut-off events. For 247/271 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 379 event pairs, 0 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 337. Up to 51 conditions per place. [2023-11-30 04:43:25,194 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 19 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-11-30 04:43:25,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 77 transitions, 352 flow [2023-11-30 04:43:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:43:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:43:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-11-30 04:43:25,195 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7979002624671916 [2023-11-30 04:43:25,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-11-30 04:43:25,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-11-30 04:43:25,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:43:25,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-11-30 04:43:25,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,201 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 5 predicate places. [2023-11-30 04:43:25,201 INFO L500 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 352 flow [2023-11-30 04:43:25,202 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,202 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:43:25,203 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:43:25,203 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:43:25,203 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:43:25,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:43:25,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1326043192, now seen corresponding path program 1 times [2023-11-30 04:43:25,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:43:25,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316484040] [2023-11-30 04:43:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:43:25,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:43:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:43:25,309 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 04:43:25,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:43:25,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316484040] [2023-11-30 04:43:25,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316484040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:43:25,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:43:25,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:43:25,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574756593] [2023-11-30 04:43:25,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:43:25,311 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:43:25,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:43:25,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:43:25,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:43:25,312 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 127 [2023-11-30 04:43:25,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:43:25,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 127 [2023-11-30 04:43:25,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:43:25,350 INFO L124 PetriNetUnfolderBase]: 15/133 cut-off events. [2023-11-30 04:43:25,350 INFO L125 PetriNetUnfolderBase]: For 321/351 co-relation queries the response was YES. [2023-11-30 04:43:25,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 133 events. 15/133 cut-off events. For 321/351 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 289 event pairs, 0 based on Foata normal form. 12/145 useless extension candidates. Maximal degree in co-relation 306. Up to 38 conditions per place. [2023-11-30 04:43:25,351 INFO L140 encePairwiseOnDemand]: 125/127 looper letters, 0 selfloop transitions, 0 changer transitions 76/76 dead transitions. [2023-11-30 04:43:25,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 380 flow [2023-11-30 04:43:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:43:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:43:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-11-30 04:43:25,353 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8162729658792651 [2023-11-30 04:43:25,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-11-30 04:43:25,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-11-30 04:43:25,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:43:25,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-11-30 04:43:25,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,355 INFO L307 CegarLoopForPetriNet]: 84 programPoint places, 6 predicate places. [2023-11-30 04:43:25,356 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 380 flow [2023-11-30 04:43:25,356 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:43:25,364 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mix010.oepc.i_BEv2_AllErrorsAtOnce [2023-11-30 04:43:25,407 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-11-30 04:43:25,408 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-11-30 04:43:25,408 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-11-30 04:43:25,408 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-11-30 04:43:25,409 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-11-30 04:43:25,409 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-11-30 04:43:25,409 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-11-30 04:43:25,409 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-11-30 04:43:25,409 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-11-30 04:43:25,409 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:43:25,410 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-30 04:43:25,412 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:43:25,412 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:43:25,420 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:43:25 BasicIcfg [2023-11-30 04:43:25,420 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:43:25,426 INFO L158 Benchmark]: Toolchain (without parser) took 3102.48ms. Allocated memory was 350.2MB in the beginning and 572.5MB in the end (delta: 222.3MB). Free memory was 297.9MB in the beginning and 439.2MB in the end (delta: -141.3MB). Peak memory consumption was 84.1MB. Max. memory is 16.0GB. [2023-11-30 04:43:25,428 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory is still 302.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:43:25,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.45ms. Allocated memory is still 350.2MB. Free memory was 297.3MB in the beginning and 273.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-11-30 04:43:25,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.80ms. Allocated memory is still 350.2MB. Free memory was 273.7MB in the beginning and 271.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:43:25,428 INFO L158 Benchmark]: Boogie Preprocessor took 38.77ms. Allocated memory is still 350.2MB. Free memory was 271.6MB in the beginning and 269.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:43:25,429 INFO L158 Benchmark]: RCFGBuilder took 574.54ms. Allocated memory is still 350.2MB. Free memory was 269.5MB in the beginning and 231.2MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-11-30 04:43:25,429 INFO L158 Benchmark]: TraceAbstraction took 1867.72ms. Allocated memory was 350.2MB in the beginning and 572.5MB in the end (delta: 222.3MB). Free memory was 230.2MB in the beginning and 439.2MB in the end (delta: -209.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.0GB. [2023-11-30 04:43:25,431 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 350.2MB. Free memory is still 302.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 535.45ms. Allocated memory is still 350.2MB. Free memory was 297.3MB in the beginning and 273.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 78.80ms. Allocated memory is still 350.2MB. Free memory was 273.7MB in the beginning and 271.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.77ms. Allocated memory is still 350.2MB. Free memory was 271.6MB in the beginning and 269.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 574.54ms. Allocated memory is still 350.2MB. Free memory was 269.5MB in the beginning and 231.2MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 1867.72ms. Allocated memory was 350.2MB in the beginning and 572.5MB in the end (delta: 222.3MB). Free memory was 230.2MB in the beginning and 439.2MB in the end (delta: -209.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 155 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=6, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 396 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 04:43:25,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...