/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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/safe026_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:10:22,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:10:22,530 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 [2023-12-05 21:10:22,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:10:22,562 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:10:22,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:10:22,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:10:22,563 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:10:22,564 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:10:22,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:10:22,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:10:22,569 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:10:22,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:10:22,570 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:10:22,570 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:10:22,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:10:22,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:10:22,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:10:22,571 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:10:22,571 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:10:22,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:10:22,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:10:22,573 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:10:22,573 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:10:22,573 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:10:22,574 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:22,574 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:10:22,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:10:22,575 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:10:22,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:10:22,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:10:22,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:10:22,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:10:22,577 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:10:22,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:10:22,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:10:22,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:10:22,831 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:10:22,831 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:10:22,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2023-12-05 21:10:23,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:10:24,220 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:10:24,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.i [2023-12-05 21:10:24,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813f36a27/9c35af73b70d4a06a48ac770d47a65ba/FLAG65c3651a9 [2023-12-05 21:10:24,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/813f36a27/9c35af73b70d4a06a48ac770d47a65ba [2023-12-05 21:10:24,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:10:24,254 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:10:24,257 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:24,257 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:10:24,261 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:10:24,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d67bb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24, skipping insertion in model container [2023-12-05 21:10:24,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,319 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:10:24,651 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:24,664 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:10:24,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:10:24,746 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:24,747 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-05 21:10:24,753 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:10:24,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24 WrapperNode [2023-12-05 21:10:24,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:10:24,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:24,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:10:24,755 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:10:24,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,788 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,813 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2023-12-05 21:10:24,813 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:10:24,814 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:10:24,814 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:10:24,814 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:10:24,821 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,847 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,849 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:10:24,850 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:10:24,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:10:24,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:10:24,851 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (1/1) ... [2023-12-05 21:10:24,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:10:24,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:10:24,893 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) [2023-12-05 21:10:24,913 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 [2023-12-05 21:10:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:10:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-05 21:10:24,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:10:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:10:24,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:10:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-05 21:10:24,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-05 21:10:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-05 21:10:24,935 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-05 21:10:24,935 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-05 21:10:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-05 21:10:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:10:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-05 21:10:24,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:10:24,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:10:24,937 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:10:25,065 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:10:25,067 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:10:25,271 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:10:25,281 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:10:25,281 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:10:25,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:25 BoogieIcfgContainer [2023-12-05 21:10:25,283 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:10:25,285 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:10:25,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:10:25,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:10:25,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:10:24" (1/3) ... [2023-12-05 21:10:25,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9b31b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:25, skipping insertion in model container [2023-12-05 21:10:25,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:10:24" (2/3) ... [2023-12-05 21:10:25,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d9b31b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:10:25, skipping insertion in model container [2023-12-05 21:10:25,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:10:25" (3/3) ... [2023-12-05 21:10:25,290 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_tso.i [2023-12-05 21:10:25,305 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:10:25,305 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:10:25,305 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:10:25,357 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:10:25,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 100 transitions, 212 flow [2023-12-05 21:10:25,429 INFO L124 PetriNetUnfolderBase]: 3/97 cut-off events. [2023-12-05 21:10:25,429 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:25,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 97 events. 3/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-12-05 21:10:25,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 100 transitions, 212 flow [2023-12-05 21:10:25,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 51 transitions, 108 flow [2023-12-05 21:10:25,447 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:10:25,453 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;@4321beb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:10:25,453 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:10:25,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:10:25,459 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-12-05 21:10:25,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:25,459 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:25,460 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:25,460 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)] === [2023-12-05 21:10:25,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash -388942639, now seen corresponding path program 1 times [2023-12-05 21:10:25,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:25,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578948691] [2023-12-05 21:10:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:25,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:25,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578948691] [2023-12-05 21:10:25,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578948691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:25,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:25,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:25,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527305369] [2023-12-05 21:10:25,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:25,782 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:25,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:25,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:25,812 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 100 [2023-12-05 21:10:25,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2023-12-05 21:10:25,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:25,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 100 [2023-12-05 21:10:25,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:25,850 INFO L124 PetriNetUnfolderBase]: 0/50 cut-off events. [2023-12-05 21:10:25,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:10:25,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 50 events. 0/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2023-12-05 21:10:25,851 INFO L140 encePairwiseOnDemand]: 98/100 looper letters, 13 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-12-05 21:10:25,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 50 transitions, 134 flow [2023-12-05 21:10:25,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:25,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:25,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-12-05 21:10:25,863 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.79 [2023-12-05 21:10:25,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-12-05 21:10:25,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-12-05 21:10:25,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:25,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-12-05 21:10:25,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-12-05 21:10:25,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:25,874 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:25,877 INFO L308 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2023-12-05 21:10:25,878 INFO L500 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 134 flow [2023-12-05 21:10:25,878 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2023-12-05 21:10:25,878 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:25,878 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:25,879 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:10:25,879 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)] === [2023-12-05 21:10:25,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash -388942638, now seen corresponding path program 1 times [2023-12-05 21:10:25,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:25,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031295492] [2023-12-05 21:10:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:25,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:26,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:26,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031295492] [2023-12-05 21:10:26,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031295492] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:26,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:26,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:26,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125921863] [2023-12-05 21:10:26,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:26,008 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:26,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:26,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:26,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:26,010 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 100 [2023-12-05 21:10:26,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-12-05 21:10:26,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:26,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 100 [2023-12-05 21:10:26,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:26,040 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-12-05 21:10:26,041 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-12-05 21:10:26,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 49 events. 0/49 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-12-05 21:10:26,041 INFO L140 encePairwiseOnDemand]: 98/100 looper letters, 11 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-12-05 21:10:26,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 154 flow [2023-12-05 21:10:26,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-12-05 21:10:26,044 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8133333333333334 [2023-12-05 21:10:26,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-12-05 21:10:26,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-12-05 21:10:26,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:26,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-12-05 21:10:26,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:26,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,047 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,048 INFO L308 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-12-05 21:10:26,048 INFO L500 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 154 flow [2023-12-05 21:10:26,048 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 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) [2023-12-05 21:10:26,048 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:26,049 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:26,049 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:10:26,049 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)] === [2023-12-05 21:10:26,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:26,050 INFO L85 PathProgramCache]: Analyzing trace with hash 925917278, now seen corresponding path program 1 times [2023-12-05 21:10:26,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:26,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682939835] [2023-12-05 21:10:26,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:26,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:26,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:26,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682939835] [2023-12-05 21:10:26,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682939835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:26,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:26,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:26,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939871338] [2023-12-05 21:10:26,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:26,152 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:26,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:26,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:26,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:26,154 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 100 [2023-12-05 21:10:26,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:26,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:26,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 100 [2023-12-05 21:10:26,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:26,214 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2023-12-05 21:10:26,214 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-12-05 21:10:26,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 48 events. 0/48 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 1/49 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-12-05 21:10:26,214 INFO L140 encePairwiseOnDemand]: 98/100 looper letters, 11 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-12-05 21:10:26,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 48 transitions, 174 flow [2023-12-05 21:10:26,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:26,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:26,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 244 transitions. [2023-12-05 21:10:26,219 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8133333333333334 [2023-12-05 21:10:26,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 244 transitions. [2023-12-05 21:10:26,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 244 transitions. [2023-12-05 21:10:26,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:26,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 244 transitions. [2023-12-05 21:10:26,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:26,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,226 INFO L308 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-12-05 21:10:26,227 INFO L500 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 174 flow [2023-12-05 21:10:26,227 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:26,227 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:26,227 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:10:26,227 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:10:26,228 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)] === [2023-12-05 21:10:26,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 925917277, now seen corresponding path program 1 times [2023-12-05 21:10:26,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:26,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708477660] [2023-12-05 21:10:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:26,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:26,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:26,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708477660] [2023-12-05 21:10:26,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708477660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:26,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:26,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:26,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235290933] [2023-12-05 21:10:26,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:26,325 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:26,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:26,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:26,331 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 100 [2023-12-05 21:10:26,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-12-05 21:10:26,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:26,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 100 [2023-12-05 21:10:26,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:26,368 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-12-05 21:10:26,369 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2023-12-05 21:10:26,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 47 events. 0/47 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-12-05 21:10:26,369 INFO L140 encePairwiseOnDemand]: 98/100 looper letters, 11 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-12-05 21:10:26,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 47 transitions, 192 flow [2023-12-05 21:10:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-12-05 21:10:26,372 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2023-12-05 21:10:26,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-12-05 21:10:26,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-12-05 21:10:26,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:26,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-12-05 21:10:26,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-12-05 21:10:26,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,380 INFO L308 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-12-05 21:10:26,380 INFO L500 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 192 flow [2023-12-05 21:10:26,381 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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) [2023-12-05 21:10:26,381 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:26,381 INFO L233 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] [2023-12-05 21:10:26,381 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:10:26,381 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)] === [2023-12-05 21:10:26,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1482916919, now seen corresponding path program 1 times [2023-12-05 21:10:26,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:26,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956923153] [2023-12-05 21:10:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:26,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:26,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:26,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:26,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956923153] [2023-12-05 21:10:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956923153] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:26,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:26,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:26,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934021759] [2023-12-05 21:10:26,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:26,480 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:26,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:26,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:26,482 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 100 [2023-12-05 21:10:26,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2023-12-05 21:10:26,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:26,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 100 [2023-12-05 21:10:26,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:26,503 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2023-12-05 21:10:26,503 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2023-12-05 21:10:26,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 46 events. 0/46 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-12-05 21:10:26,503 INFO L140 encePairwiseOnDemand]: 98/100 looper letters, 11 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-12-05 21:10:26,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 46 transitions, 210 flow [2023-12-05 21:10:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-12-05 21:10:26,505 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7833333333333333 [2023-12-05 21:10:26,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-12-05 21:10:26,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-12-05 21:10:26,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:26,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-12-05 21:10:26,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-12-05 21:10:26,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,508 INFO L308 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-12-05 21:10:26,508 INFO L500 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 210 flow [2023-12-05 21:10:26,508 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 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) [2023-12-05 21:10:26,508 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:10:26,508 INFO L233 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] [2023-12-05 21:10:26,509 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:10:26,509 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)] === [2023-12-05 21:10:26,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:10:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1482916918, now seen corresponding path program 1 times [2023-12-05 21:10:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:10:26,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951237360] [2023-12-05 21:10:26,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:10:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:10:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:10:26,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:10:26,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:10:26,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951237360] [2023-12-05 21:10:26,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951237360] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:10:26,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:10:26,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:10:26,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551422133] [2023-12-05 21:10:26,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:10:26,595 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:10:26,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:10:26,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:10:26,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:10:26,597 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 100 [2023-12-05 21:10:26,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:26,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:10:26,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 100 [2023-12-05 21:10:26,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:10:26,630 INFO L124 PetriNetUnfolderBase]: 0/45 cut-off events. [2023-12-05 21:10:26,630 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-12-05 21:10:26,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 45 events. 0/45 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs, 0 based on Foata normal form. 1/46 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-12-05 21:10:26,631 INFO L140 encePairwiseOnDemand]: 98/100 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2023-12-05 21:10:26,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 45 transitions, 222 flow [2023-12-05 21:10:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:10:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:10:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2023-12-05 21:10:26,632 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8066666666666666 [2023-12-05 21:10:26,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 242 transitions. [2023-12-05 21:10:26,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 242 transitions. [2023-12-05 21:10:26,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:10:26,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 242 transitions. [2023-12-05 21:10:26,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:26,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 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) [2023-12-05 21:10:26,637 INFO L308 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2023-12-05 21:10:26,637 INFO L500 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 222 flow [2023-12-05 21:10:26,637 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:10:26,646 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe026_tso.i_BEv2_AllErrorsAtOnce [2023-12-05 21:10:26,681 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:10:26,681 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:10:26,682 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:10:26,682 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:10:26,682 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-12-05 21:10:26,682 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:10:26,682 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-12-05 21:10:26,683 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-12-05 21:10:26,683 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-12-05 21:10:26,683 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:10:26,683 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:10:26,687 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:10:26,687 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:10:26,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:10:26 BasicIcfg [2023-12-05 21:10:26,696 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:10:26,700 INFO L158 Benchmark]: Toolchain (without parser) took 2442.75ms. Allocated memory is still 250.6MB. Free memory was 194.8MB in the beginning and 161.7MB in the end (delta: 33.0MB). Peak memory consumption was 33.8MB. Max. memory is 8.0GB. [2023-12-05 21:10:26,700 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 140.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:10:26,701 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.58ms. Allocated memory is still 250.6MB. Free memory was 194.8MB in the beginning and 174.3MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-05 21:10:26,701 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.47ms. Allocated memory is still 250.6MB. Free memory was 174.3MB in the beginning and 172.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:26,701 INFO L158 Benchmark]: Boogie Preprocessor took 35.63ms. Allocated memory is still 250.6MB. Free memory was 172.1MB in the beginning and 170.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:10:26,702 INFO L158 Benchmark]: RCFGBuilder took 432.60ms. Allocated memory is still 250.6MB. Free memory was 170.6MB in the beginning and 208.1MB in the end (delta: -37.4MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. [2023-12-05 21:10:26,702 INFO L158 Benchmark]: TraceAbstraction took 1411.34ms. Allocated memory is still 250.6MB. Free memory was 207.6MB in the beginning and 161.7MB in the end (delta: 45.8MB). Peak memory consumption was 45.8MB. Max. memory is 8.0GB. [2023-12-05 21:10:26,703 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 190.8MB. Free memory is still 140.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 497.58ms. Allocated memory is still 250.6MB. Free memory was 194.8MB in the beginning and 174.3MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.47ms. Allocated memory is still 250.6MB. Free memory was 174.3MB in the beginning and 172.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.63ms. Allocated memory is still 250.6MB. Free memory was 172.1MB in the beginning and 170.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 432.60ms. Allocated memory is still 250.6MB. Free memory was 170.6MB in the beginning and 208.1MB in the end (delta: -37.4MB). Peak memory consumption was 13.2MB. Max. memory is 8.0GB. * TraceAbstraction took 1411.34ms. Allocated memory is still 250.6MB. Free memory was 207.6MB in the beginning and 161.7MB in the end (delta: 45.8MB). Peak memory consumption was 45.8MB. Max. memory is 8.0GB. * 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, 124 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: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 72 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=222occurred 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, 0.6s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 258 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! [2023-12-05 21:10:26,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...