/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/pthread-wmm/safe030_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:52:00,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:52:00,711 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 04:52:00,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:52:00,726 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:52:00,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:52:00,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:52:00,727 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:52:00,727 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:52:00,727 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:52:00,728 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:52:00,728 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:52:00,728 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:52:00,728 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:52:00,729 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:52:00,729 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:52:00,729 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:52:00,729 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:52:00,730 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:52:00,730 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:52:00,730 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:52:00,730 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:52:00,731 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:52:00,731 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:52:00,731 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:52:00,731 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:52:00,732 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:52:00,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:52:00,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:52:00,732 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:52:00,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:52:00,733 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:52:00,733 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:52:00,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:52:00,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:52:00,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:52:00,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:52:00,924 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:52:00,924 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:52:00,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-30 04:52:01,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:52:02,142 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:52:02,143 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-30 04:52:02,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f142fbd6/cb6464b4e3994776ac92952dd15dd05f/FLAG92b5dd267 [2023-11-30 04:52:02,172 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f142fbd6/cb6464b4e3994776ac92952dd15dd05f [2023-11-30 04:52:02,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:52:02,174 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:52:02,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:52:02,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:52:02,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:52:02,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d6b37d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02, skipping insertion in model container [2023-11-30 04:52:02,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,230 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:52:02,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:52:02,511 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:52:02,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:52:02,576 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:52:02,576 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:52:02,582 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:52:02,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02 WrapperNode [2023-11-30 04:52:02,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:52:02,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:52:02,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:52:02,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:52:02,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,622 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 148 [2023-11-30 04:52:02,622 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:52:02,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:52:02,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:52:02,623 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:52:02,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,631 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,647 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,661 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:52:02,662 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:52:02,662 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:52:02,662 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:52:02,663 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (1/1) ... [2023-11-30 04:52:02,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:52:02,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:52:02,698 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 04:52:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:52:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:52:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:52:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:52:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:52:02,735 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-30 04:52:02,722 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 04:52:02,736 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-30 04:52:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-30 04:52:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-30 04:52:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-30 04:52:02,739 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-30 04:52:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:52:02,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:52:02,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:52:02,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:52:02,741 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 04:52:02,868 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:52:02,870 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:52:03,089 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:52:03,198 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:52:03,198 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 04:52:03,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:52:03 BoogieIcfgContainer [2023-11-30 04:52:03,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:52:03,201 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:52:03,201 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:52:03,203 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:52:03,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:52:02" (1/3) ... [2023-11-30 04:52:03,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5c79e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:52:03, skipping insertion in model container [2023-11-30 04:52:03,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:52:02" (2/3) ... [2023-11-30 04:52:03,204 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5c79e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:52:03, skipping insertion in model container [2023-11-30 04:52:03,204 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:52:03" (3/3) ... [2023-11-30 04:52:03,205 INFO L112 eAbstractionObserver]: Analyzing ICFG safe030_power.oepc_pso.oepc_rmo.oepc.i [2023-11-30 04:52:03,216 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:52:03,216 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-30 04:52:03,216 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:52:03,252 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:52:03,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 118 transitions, 248 flow [2023-11-30 04:52:03,337 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2023-11-30 04:52:03,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:52:03,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 115 events. 3/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 84 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 80. Up to 2 conditions per place. [2023-11-30 04:52:03,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 118 transitions, 248 flow [2023-11-30 04:52:03,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 144 flow [2023-11-30 04:52:03,353 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:52:03,358 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;@78337de7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:52:03,358 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-30 04:52:03,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:52:03,363 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2023-11-30 04:52:03,364 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:52:03,364 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:52:03,364 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:52:03,365 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:52:03,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:52:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1029167082, now seen corresponding path program 1 times [2023-11-30 04:52:03,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:52:03,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017980969] [2023-11-30 04:52:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:52:03,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:52:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:52:03,629 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 04:52:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:52:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017980969] [2023-11-30 04:52:03,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017980969] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:52:03,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:52:03,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:52:03,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924574187] [2023-11-30 04:52:03,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:52:03,637 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:52:03,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:52:03,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:52:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:52:03,656 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 118 [2023-11-30 04:52:03,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 04:52:03,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:52:03,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 118 [2023-11-30 04:52:03,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:52:03,704 INFO L124 PetriNetUnfolderBase]: 24/155 cut-off events. [2023-11-30 04:52:03,704 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:52:03,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 155 events. 24/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 494 event pairs, 24 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 176. Up to 57 conditions per place. [2023-11-30 04:52:03,706 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 16 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-30 04:52:03,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 176 flow [2023-11-30 04:52:03,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:52:03,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:52:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-30 04:52:03,716 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7796610169491526 [2023-11-30 04:52:03,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-30 04:52:03,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-30 04:52:03,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:52:03,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-30 04:52:03,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 04:52:03,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:03,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:03,732 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-11-30 04:52:03,732 INFO L500 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 176 flow [2023-11-30 04:52:03,733 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 04:52:03,733 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:52:03,733 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:52:03,733 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:52:03,734 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:52:03,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:52:03,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1029167083, now seen corresponding path program 1 times [2023-11-30 04:52:03,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:52:03,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075064386] [2023-11-30 04:52:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:52:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:52:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:52:03,876 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 04:52:03,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:52:03,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075064386] [2023-11-30 04:52:03,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075064386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:52:03,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:52:03,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:52:03,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977842619] [2023-11-30 04:52:03,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:52:03,878 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:52:03,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:52:03,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:52:03,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:52:03,879 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2023-11-30 04:52:03,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 68 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 04:52:03,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:52:03,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2023-11-30 04:52:03,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:52:03,942 INFO L124 PetriNetUnfolderBase]: 33/169 cut-off events. [2023-11-30 04:52:03,942 INFO L125 PetriNetUnfolderBase]: For 40/48 co-relation queries the response was YES. [2023-11-30 04:52:03,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 169 events. 33/169 cut-off events. For 40/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 579 event pairs, 33 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 262. Up to 65 conditions per place. [2023-11-30 04:52:03,945 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 14 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-11-30 04:52:03,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 67 transitions, 202 flow [2023-11-30 04:52:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:52:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:52:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-30 04:52:03,949 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7994350282485876 [2023-11-30 04:52:03,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-30 04:52:03,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-30 04:52:03,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:52:03,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-30 04:52:03,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 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 04:52:03,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:03,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:03,953 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-11-30 04:52:03,953 INFO L500 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 202 flow [2023-11-30 04:52:03,953 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 04:52:03,953 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:52:03,954 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:52:03,954 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:52:03,954 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:52:03,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:52:03,955 INFO L85 PathProgramCache]: Analyzing trace with hash 39423171, now seen corresponding path program 1 times [2023-11-30 04:52:03,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:52:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007996979] [2023-11-30 04:52:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:52:03,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:52:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:52:04,063 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 04:52:04,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:52:04,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007996979] [2023-11-30 04:52:04,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007996979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:52:04,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:52:04,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:52:04,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484948054] [2023-11-30 04:52:04,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:52:04,065 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:52:04,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:52:04,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:52:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:52:04,068 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2023-11-30 04:52:04,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 04:52:04,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:52:04,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2023-11-30 04:52:04,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:52:04,129 INFO L124 PetriNetUnfolderBase]: 31/152 cut-off events. [2023-11-30 04:52:04,130 INFO L125 PetriNetUnfolderBase]: For 99/111 co-relation queries the response was YES. [2023-11-30 04:52:04,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 152 events. 31/152 cut-off events. For 99/111 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 454 event pairs, 9 based on Foata normal form. 3/152 useless extension candidates. Maximal degree in co-relation 298. Up to 63 conditions per place. [2023-11-30 04:52:04,131 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 16 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-30 04:52:04,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 244 flow [2023-11-30 04:52:04,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:52:04,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:52:04,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-11-30 04:52:04,133 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8050847457627118 [2023-11-30 04:52:04,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-11-30 04:52:04,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-11-30 04:52:04,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:52:04,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-11-30 04:52:04,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,136 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,137 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-11-30 04:52:04,137 INFO L500 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 244 flow [2023-11-30 04:52:04,137 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 04:52:04,137 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:52:04,137 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:52:04,137 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:52:04,137 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:52:04,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:52:04,138 INFO L85 PathProgramCache]: Analyzing trace with hash 39423170, now seen corresponding path program 1 times [2023-11-30 04:52:04,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:52:04,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338133502] [2023-11-30 04:52:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:52:04,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:52:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:52:04,194 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 04:52:04,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:52:04,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338133502] [2023-11-30 04:52:04,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338133502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:52:04,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:52:04,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:52:04,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076758373] [2023-11-30 04:52:04,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:52:04,195 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:52:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:52:04,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:52:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:52:04,196 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 118 [2023-11-30 04:52:04,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 04:52:04,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:52:04,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 118 [2023-11-30 04:52:04,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:52:04,243 INFO L124 PetriNetUnfolderBase]: 29/147 cut-off events. [2023-11-30 04:52:04,244 INFO L125 PetriNetUnfolderBase]: For 177/195 co-relation queries the response was YES. [2023-11-30 04:52:04,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 147 events. 29/147 cut-off events. For 177/195 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 409 event pairs, 9 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 336. Up to 58 conditions per place. [2023-11-30 04:52:04,246 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 16 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-11-30 04:52:04,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 67 transitions, 272 flow [2023-11-30 04:52:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:52:04,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:52:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-30 04:52:04,248 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7796610169491526 [2023-11-30 04:52:04,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-30 04:52:04,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-30 04:52:04,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:52:04,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-30 04:52:04,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 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 04:52:04,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,249 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,250 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-11-30 04:52:04,251 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 272 flow [2023-11-30 04:52:04,251 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 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 04:52:04,251 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:52:04,251 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:52:04,251 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:52:04,252 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:52:04,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:52:04,252 INFO L85 PathProgramCache]: Analyzing trace with hash -306026372, now seen corresponding path program 1 times [2023-11-30 04:52:04,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:52:04,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304900410] [2023-11-30 04:52:04,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:52:04,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:52:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:52:04,331 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 04:52:04,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:52:04,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304900410] [2023-11-30 04:52:04,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304900410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:52:04,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:52:04,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:52:04,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354991823] [2023-11-30 04:52:04,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:52:04,332 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:52:04,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:52:04,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:52:04,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:52:04,333 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 118 [2023-11-30 04:52:04,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 04:52:04,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:52:04,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 118 [2023-11-30 04:52:04,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:52:04,376 INFO L124 PetriNetUnfolderBase]: 22/146 cut-off events. [2023-11-30 04:52:04,376 INFO L125 PetriNetUnfolderBase]: For 223/247 co-relation queries the response was YES. [2023-11-30 04:52:04,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 146 events. 22/146 cut-off events. For 223/247 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 373 event pairs, 3 based on Foata normal form. 6/152 useless extension candidates. Maximal degree in co-relation 343. Up to 51 conditions per place. [2023-11-30 04:52:04,377 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 19 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-11-30 04:52:04,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 69 transitions, 336 flow [2023-11-30 04:52:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:52:04,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:52:04,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2023-11-30 04:52:04,379 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7824858757062146 [2023-11-30 04:52:04,379 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2023-11-30 04:52:04,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2023-11-30 04:52:04,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:52:04,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2023-11-30 04:52:04,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 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 04:52:04,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,380 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,383 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2023-11-30 04:52:04,383 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 336 flow [2023-11-30 04:52:04,383 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 04:52:04,384 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:52:04,384 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:52:04,384 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:52:04,384 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:52:04,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:52:04,385 INFO L85 PathProgramCache]: Analyzing trace with hash -306026371, now seen corresponding path program 1 times [2023-11-30 04:52:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:52:04,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715428545] [2023-11-30 04:52:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:52:04,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:52:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:52:04,464 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 04:52:04,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:52:04,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715428545] [2023-11-30 04:52:04,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715428545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:52:04,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:52:04,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:52:04,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762137148] [2023-11-30 04:52:04,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:52:04,470 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:52:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:52:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:52:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:52:04,472 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2023-11-30 04:52:04,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 04:52:04,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:52:04,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2023-11-30 04:52:04,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:52:04,503 INFO L124 PetriNetUnfolderBase]: 15/124 cut-off events. [2023-11-30 04:52:04,503 INFO L125 PetriNetUnfolderBase]: For 303/333 co-relation queries the response was YES. [2023-11-30 04:52:04,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 124 events. 15/124 cut-off events. For 303/333 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 279 event pairs, 0 based on Foata normal form. 12/136 useless extension candidates. Maximal degree in co-relation 303. Up to 38 conditions per place. [2023-11-30 04:52:04,504 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2023-11-30 04:52:04,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 68 transitions, 364 flow [2023-11-30 04:52:04,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:52:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:52:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2023-11-30 04:52:04,505 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8022598870056498 [2023-11-30 04:52:04,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2023-11-30 04:52:04,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2023-11-30 04:52:04,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:52:04,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2023-11-30 04:52:04,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 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 04:52:04,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 118.0) internal successors, (472), 4 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:52:04,509 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-11-30 04:52:04,509 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 364 flow [2023-11-30 04:52:04,509 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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 04:52:04,518 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe030_power.oepc_pso.oepc_rmo.oepc.i_BEv2_AllErrorsAtOnce [2023-11-30 04:52:04,543 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-11-30 04:52:04,544 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-11-30 04:52:04,544 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-11-30 04:52:04,544 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-11-30 04:52:04,544 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-11-30 04:52:04,545 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-11-30 04:52:04,545 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-11-30 04:52:04,545 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-11-30 04:52:04,545 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-11-30 04:52:04,545 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:52:04,545 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-30 04:52:04,548 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:52:04,548 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:52:04,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:52:04 BasicIcfg [2023-11-30 04:52:04,553 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:52:04,557 INFO L158 Benchmark]: Toolchain (without parser) took 2378.67ms. Allocated memory was 381.7MB in the beginning and 492.8MB in the end (delta: 111.1MB). Free memory was 341.5MB in the beginning and 257.7MB in the end (delta: 83.8MB). Peak memory consumption was 197.6MB. Max. memory is 16.0GB. [2023-11-30 04:52:04,559 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 381.7MB. Free memory is still 337.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:52:04,559 INFO L158 Benchmark]: CACSL2BoogieTranslator took 409.38ms. Allocated memory is still 381.7MB. Free memory was 341.5MB in the beginning and 318.0MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-11-30 04:52:04,559 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.31ms. Allocated memory is still 381.7MB. Free memory was 318.0MB in the beginning and 315.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-30 04:52:04,559 INFO L158 Benchmark]: Boogie Preprocessor took 38.88ms. Allocated memory is still 381.7MB. Free memory was 315.1MB in the beginning and 313.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:52:04,559 INFO L158 Benchmark]: RCFGBuilder took 537.61ms. Allocated memory was 381.7MB in the beginning and 492.8MB in the end (delta: 111.1MB). Free memory was 313.0MB in the beginning and 454.8MB in the end (delta: -141.8MB). Peak memory consumption was 38.3MB. Max. memory is 16.0GB. [2023-11-30 04:52:04,559 INFO L158 Benchmark]: TraceAbstraction took 1351.57ms. Allocated memory is still 492.8MB. Free memory was 453.8MB in the beginning and 257.7MB in the end (delta: 196.1MB). Peak memory consumption was 197.1MB. Max. memory is 16.0GB. [2023-11-30 04:52:04,560 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 381.7MB. Free memory is still 337.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 409.38ms. Allocated memory is still 381.7MB. Free memory was 341.5MB in the beginning and 318.0MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.31ms. Allocated memory is still 381.7MB. Free memory was 318.0MB in the beginning and 315.1MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.88ms. Allocated memory is still 381.7MB. Free memory was 315.1MB in the beginning and 313.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 537.61ms. Allocated memory was 381.7MB in the beginning and 492.8MB in the end (delta: 111.1MB). Free memory was 313.0MB in the beginning and 454.8MB in the end (delta: -141.8MB). Peak memory consumption was 38.3MB. Max. memory is 16.0GB. * TraceAbstraction took 1351.57ms. Allocated memory is still 492.8MB. Free memory was 453.8MB in the beginning and 257.7MB in the end (delta: 196.1MB). Peak memory consumption was 197.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 143 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: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 108 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=364occurred 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, 0.5s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 360 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 04:52:04,590 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...