/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-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:15:31,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:15:31,753 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 04:15:31,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:15:31,777 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:15:31,778 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:15:31,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:15:31,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:15:31,779 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:15:31,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:15:31,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:15:31,782 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:15:31,782 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:15:31,783 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:15:31,783 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:15:31,784 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:15:31,784 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:15:31,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:15:31,784 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:15:31,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:15:31,784 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:15:31,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:15:31,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:15:31,785 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:15:31,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:15:31,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:15:31,786 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:15:31,786 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:15:31,786 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:15:31,786 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:15:31,787 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:15:31,787 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:15:31,787 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:15:31,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:15:31,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:15:31,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:15:31,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:15:31,966 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:15:31,967 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:15:31,967 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2023-11-30 04:15:32,944 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:15:33,159 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:15:33,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2023-11-30 04:15:33,174 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f763b0386/68ea00dae03f4c6c9db642a61dfeff61/FLAG3208a94e0 [2023-11-30 04:15:33,186 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f763b0386/68ea00dae03f4c6c9db642a61dfeff61 [2023-11-30 04:15:33,188 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:15:33,188 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:15:33,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:15:33,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:15:33,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:15:33,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4ac8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33, skipping insertion in model container [2023-11-30 04:15:33,194 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,225 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:15:33,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:15:33,486 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:15:33,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:15:33,558 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:15:33,559 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:15:33,564 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:15:33,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33 WrapperNode [2023-11-30 04:15:33,564 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:15:33,565 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:15:33,565 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:15:33,565 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:15:33,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,615 INFO L138 Inliner]: procedures = 170, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 207 [2023-11-30 04:15:33,615 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:15:33,616 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:15:33,616 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:15:33,616 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:15:33,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,622 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,635 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,638 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,641 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,642 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,643 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:15:33,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:15:33,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:15:33,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:15:33,645 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (1/1) ... [2023-11-30 04:15:33,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:15:33,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:15:33,675 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 04:15:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 04:15:33,702 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-30 04:15:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-30 04:15:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-30 04:15:33,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-30 04:15:33,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:15:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:15:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:15:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:15:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:15:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:15:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:15:33,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:15:33,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:15:33,705 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 04:15:33,699 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 04:15:33,823 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:15:33,825 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:15:34,000 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:15:34,016 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:15:34,017 INFO L309 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-30 04:15:34,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:15:34 BoogieIcfgContainer [2023-11-30 04:15:34,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:15:34,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:15:34,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:15:34,023 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:15:34,023 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:15:33" (1/3) ... [2023-11-30 04:15:34,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7aa0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:15:34, skipping insertion in model container [2023-11-30 04:15:34,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:15:33" (2/3) ... [2023-11-30 04:15:34,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7aa0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:15:34, skipping insertion in model container [2023-11-30 04:15:34,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:15:34" (3/3) ... [2023-11-30 04:15:34,025 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2023-11-30 04:15:34,036 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:15:34,037 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-30 04:15:34,037 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:15:34,087 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 04:15:34,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 147 transitions, 308 flow [2023-11-30 04:15:34,188 INFO L124 PetriNetUnfolderBase]: 26/145 cut-off events. [2023-11-30 04:15:34,188 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:15:34,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 26/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 345 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 111. Up to 5 conditions per place. [2023-11-30 04:15:34,196 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 147 transitions, 308 flow [2023-11-30 04:15:34,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 135 transitions, 279 flow [2023-11-30 04:15:34,213 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:15:34,218 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;@6f6bcb61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:15:34,218 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-30 04:15:34,228 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:15:34,228 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-11-30 04:15:34,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:15:34,228 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:34,229 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:15:34,229 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 04:15:34,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash 314705137, now seen corresponding path program 1 times [2023-11-30 04:15:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888297618] [2023-11-30 04:15:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:34,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:34,483 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 04:15:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:34,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888297618] [2023-11-30 04:15:34,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888297618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:34,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:34,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184697392] [2023-11-30 04:15:34,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:34,490 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:34,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:34,510 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 147 [2023-11-30 04:15:34,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 135 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:34,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 147 [2023-11-30 04:15:34,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:34,565 INFO L124 PetriNetUnfolderBase]: 12/115 cut-off events. [2023-11-30 04:15:34,566 INFO L125 PetriNetUnfolderBase]: For 3/8 co-relation queries the response was YES. [2023-11-30 04:15:34,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 115 events. 12/115 cut-off events. For 3/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 247 event pairs, 0 based on Foata normal form. 49/146 useless extension candidates. Maximal degree in co-relation 97. Up to 13 conditions per place. [2023-11-30 04:15:34,568 INFO L140 encePairwiseOnDemand]: 130/147 looper letters, 16 selfloop transitions, 1 changer transitions 0/115 dead transitions. [2023-11-30 04:15:34,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 115 transitions, 273 flow [2023-11-30 04:15:34,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:34,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2023-11-30 04:15:34,577 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8163265306122449 [2023-11-30 04:15:34,577 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2023-11-30 04:15:34,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2023-11-30 04:15:34,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:34,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2023-11-30 04:15:34,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,591 INFO L307 CegarLoopForPetriNet]: 116 programPoint places, -4 predicate places. [2023-11-30 04:15:34,591 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 115 transitions, 273 flow [2023-11-30 04:15:34,592 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,592 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:34,592 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:15:34,592 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:15:34,592 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 04:15:34,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:34,593 INFO L85 PathProgramCache]: Analyzing trace with hash 314705138, now seen corresponding path program 1 times [2023-11-30 04:15:34,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:34,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874801188] [2023-11-30 04:15:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:34,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:34,717 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 04:15:34,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:34,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874801188] [2023-11-30 04:15:34,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874801188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:34,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:34,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:15:34,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782063714] [2023-11-30 04:15:34,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:34,718 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 04:15:34,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:34,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 04:15:34,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 04:15:34,720 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 147 [2023-11-30 04:15:34,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 115 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:34,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 147 [2023-11-30 04:15:34,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:34,783 INFO L124 PetriNetUnfolderBase]: 12/113 cut-off events. [2023-11-30 04:15:34,783 INFO L125 PetriNetUnfolderBase]: For 18/47 co-relation queries the response was YES. [2023-11-30 04:15:34,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 113 events. 12/113 cut-off events. For 18/47 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 238 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 100. Up to 13 conditions per place. [2023-11-30 04:15:34,788 INFO L140 encePairwiseOnDemand]: 144/147 looper letters, 16 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2023-11-30 04:15:34,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 113 transitions, 299 flow [2023-11-30 04:15:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:34,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-11-30 04:15:34,792 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7709750566893424 [2023-11-30 04:15:34,792 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-11-30 04:15:34,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-11-30 04:15:34,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:34,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-11-30 04:15:34,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,799 INFO L307 CegarLoopForPetriNet]: 116 programPoint places, -4 predicate places. [2023-11-30 04:15:34,799 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 299 flow [2023-11-30 04:15:34,799 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,799 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:34,799 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:15:34,800 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:15:34,800 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 04:15:34,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash 244414094, now seen corresponding path program 1 times [2023-11-30 04:15:34,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:34,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076868033] [2023-11-30 04:15:34,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:34,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:34,849 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 04:15:34,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:34,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076868033] [2023-11-30 04:15:34,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076868033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:34,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:34,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:34,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253242044] [2023-11-30 04:15:34,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:34,850 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:34,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:34,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:34,852 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 147 [2023-11-30 04:15:34,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:34,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 147 [2023-11-30 04:15:34,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:34,888 INFO L124 PetriNetUnfolderBase]: 12/111 cut-off events. [2023-11-30 04:15:34,888 INFO L125 PetriNetUnfolderBase]: For 45/84 co-relation queries the response was YES. [2023-11-30 04:15:34,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 111 events. 12/111 cut-off events. For 45/84 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 230 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 101. Up to 11 conditions per place. [2023-11-30 04:15:34,890 INFO L140 encePairwiseOnDemand]: 144/147 looper letters, 14 selfloop transitions, 1 changer transitions 0/111 dead transitions. [2023-11-30 04:15:34,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 111 transitions, 317 flow [2023-11-30 04:15:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:34,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-11-30 04:15:34,892 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.780045351473923 [2023-11-30 04:15:34,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-11-30 04:15:34,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-11-30 04:15:34,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:34,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-11-30 04:15:34,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,897 INFO L307 CegarLoopForPetriNet]: 116 programPoint places, -4 predicate places. [2023-11-30 04:15:34,897 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 317 flow [2023-11-30 04:15:34,897 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:34,897 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:15:34,897 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] [2023-11-30 04:15:34,897 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:15:34,898 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 04:15:34,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:15:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash 244414095, now seen corresponding path program 1 times [2023-11-30 04:15:34,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:15:34,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311779471] [2023-11-30 04:15:34,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:15:34,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:15:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:15:35,002 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 04:15:35,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:15:35,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311779471] [2023-11-30 04:15:35,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311779471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:15:35,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:15:35,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:15:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078968434] [2023-11-30 04:15:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:15:35,004 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:15:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:15:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:15:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:15:35,005 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2023-11-30 04:15:35,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:35,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:15:35,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2023-11-30 04:15:35,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:15:35,034 INFO L124 PetriNetUnfolderBase]: 12/109 cut-off events. [2023-11-30 04:15:35,035 INFO L125 PetriNetUnfolderBase]: For 81/120 co-relation queries the response was YES. [2023-11-30 04:15:35,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 109 events. 12/109 cut-off events. For 81/120 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 225 event pairs, 0 based on Foata normal form. 2/97 useless extension candidates. Maximal degree in co-relation 101. Up to 9 conditions per place. [2023-11-30 04:15:35,035 INFO L140 encePairwiseOnDemand]: 144/147 looper letters, 0 selfloop transitions, 0 changer transitions 109/109 dead transitions. [2023-11-30 04:15:35,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 109 transitions, 329 flow [2023-11-30 04:15:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:15:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:15:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-11-30 04:15:35,037 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7868480725623582 [2023-11-30 04:15:35,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-11-30 04:15:35,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-11-30 04:15:35,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:15:35,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-11-30 04:15:35,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:35,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:35,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:35,042 INFO L307 CegarLoopForPetriNet]: 116 programPoint places, -4 predicate places. [2023-11-30 04:15:35,043 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 329 flow [2023-11-30 04:15:35,043 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:15:35,066 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/lamport.i_BEv2_AllErrorsAtOnce [2023-11-30 04:15:35,088 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-30 04:15:35,089 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-30 04:15:35,089 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-30 04:15:35,089 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-11-30 04:15:35,089 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-30 04:15:35,090 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-11-30 04:15:35,090 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-30 04:15:35,090 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-30 04:15:35,090 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-11-30 04:15:35,090 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-30 04:15:35,090 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:15:35,091 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-30 04:15:35,093 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:15:35,093 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:15:35,097 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:15:35 BasicIcfg [2023-11-30 04:15:35,097 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:15:35,098 INFO L158 Benchmark]: Toolchain (without parser) took 1909.45ms. Allocated memory is still 474.0MB. Free memory was 429.5MB in the beginning and 329.3MB in the end (delta: 100.2MB). Peak memory consumption was 100.9MB. Max. memory is 16.0GB. [2023-11-30 04:15:35,098 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory is still 297.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:15:35,098 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.08ms. Allocated memory is still 474.0MB. Free memory was 429.5MB in the beginning and 408.8MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-30 04:15:35,099 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.41ms. Allocated memory is still 474.0MB. Free memory was 408.8MB in the beginning and 406.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:15:35,099 INFO L158 Benchmark]: Boogie Preprocessor took 28.58ms. Allocated memory is still 474.0MB. Free memory was 406.4MB in the beginning and 404.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:15:35,099 INFO L158 Benchmark]: RCFGBuilder took 372.98ms. Allocated memory is still 474.0MB. Free memory was 404.7MB in the beginning and 388.2MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-11-30 04:15:35,100 INFO L158 Benchmark]: TraceAbstraction took 1076.54ms. Allocated memory is still 474.0MB. Free memory was 387.5MB in the beginning and 329.3MB in the end (delta: 58.3MB). Peak memory consumption was 59.0MB. Max. memory is 16.0GB. [2023-11-30 04:15:35,101 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 346.0MB. Free memory is still 297.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 375.08ms. Allocated memory is still 474.0MB. Free memory was 429.5MB in the beginning and 408.8MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.41ms. Allocated memory is still 474.0MB. Free memory was 408.8MB in the beginning and 406.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.58ms. Allocated memory is still 474.0MB. Free memory was 406.4MB in the beginning and 404.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 372.98ms. Allocated memory is still 474.0MB. Free memory was 404.7MB in the beginning and 388.2MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 1076.54ms. Allocated memory is still 474.0MB. Free memory was 387.5MB in the beginning and 329.3MB in the end (delta: 58.3MB). Peak memory consumption was 59.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 196 locations, 10 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: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60 IncrementalHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 21 mSDtfsCounter, 60 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=329occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 241 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 04:15:35,117 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...