/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/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:51:13,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:51:14,006 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 04:51:14,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:51:14,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:51:14,039 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:51:14,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:51:14,040 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:51:14,040 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:51:14,043 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:51:14,044 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:51:14,044 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:51:14,044 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:51:14,045 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:51:14,045 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:51:14,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:51:14,046 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:51:14,046 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:51:14,046 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:51:14,046 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:51:14,046 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:51:14,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:51:14,047 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:51:14,048 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:51:14,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:51:14,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:51:14,049 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:51:14,049 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:51:14,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:51:14,050 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:51:14,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:51:14,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:51:14,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:51:14,051 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:51:14,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:51:14,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:51:14,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:51:14,317 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:51:14,318 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:51:14,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-30 04:51:15,480 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:51:15,764 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:51:15,764 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-30 04:51:15,786 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8741b4d3/66be8558589745eeb5f5f2aff8aec4a8/FLAGf12ad088b [2023-11-30 04:51:15,797 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8741b4d3/66be8558589745eeb5f5f2aff8aec4a8 [2023-11-30 04:51:15,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:51:15,800 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:51:15,801 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:51:15,801 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:51:15,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:51:15,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:51:15" (1/1) ... [2023-11-30 04:51:15,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ec908f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:15, skipping insertion in model container [2023-11-30 04:51:15,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:51:15" (1/1) ... [2023-11-30 04:51:15,845 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:51:16,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:51:16,183 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:51:16,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:51:16,277 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:51:16,277 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 04:51:16,303 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:51:16,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16 WrapperNode [2023-11-30 04:51:16,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:51:16,304 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:51:16,304 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:51:16,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:51:16,310 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,352 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 132 [2023-11-30 04:51:16,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:51:16,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:51:16,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:51:16,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:51:16,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,365 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,365 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,374 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,376 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,380 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:51:16,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:51:16,383 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:51:16,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:51:16,384 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (1/1) ... [2023-11-30 04:51:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:51:16,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:51:16,424 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 04:51:16,429 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 04:51:16,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:51:16,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 04:51:16,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:51:16,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:51:16,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:51:16,448 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-30 04:51:16,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-30 04:51:16,448 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-30 04:51:16,448 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-30 04:51:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-30 04:51:16,449 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-30 04:51:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 04:51:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 04:51:16,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:51:16,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:51:16,450 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 04:51:16,564 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:51:16,566 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:51:16,835 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:51:16,976 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:51:16,976 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 04:51:16,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:51:16 BoogieIcfgContainer [2023-11-30 04:51:16,979 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:51:16,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:51:16,982 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:51:16,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:51:16,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:51:15" (1/3) ... [2023-11-30 04:51:16,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@960a9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:51:16, skipping insertion in model container [2023-11-30 04:51:16,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:51:16" (2/3) ... [2023-11-30 04:51:16,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@960a9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:51:16, skipping insertion in model container [2023-11-30 04:51:16,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:51:16" (3/3) ... [2023-11-30 04:51:16,988 INFO L112 eAbstractionObserver]: Analyzing ICFG safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-30 04:51:17,003 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:51:17,003 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-30 04:51:17,003 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:51:17,058 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:51:17,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 118 transitions, 248 flow [2023-11-30 04:51:17,176 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2023-11-30 04:51:17,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:51:17,180 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 83 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2023-11-30 04:51:17,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 118 transitions, 248 flow [2023-11-30 04:51:17,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 69 transitions, 144 flow [2023-11-30 04:51:17,201 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:51:17,208 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;@7d01f655, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:51:17,208 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-30 04:51:17,218 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:51:17,218 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2023-11-30 04:51:17,218 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:51:17,218 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:17,219 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] [2023-11-30 04:51:17,219 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 04:51:17,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1193229516, now seen corresponding path program 1 times [2023-11-30 04:51:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:17,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735335056] [2023-11-30 04:51:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:17,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:17,566 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 04:51:17,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:17,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735335056] [2023-11-30 04:51:17,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735335056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:17,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:17,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:17,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655272133] [2023-11-30 04:51:17,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:17,590 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:17,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:17,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:17,628 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 118 [2023-11-30 04:51:17,631 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 04:51:17,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:17,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 118 [2023-11-30 04:51:17,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:17,735 INFO L124 PetriNetUnfolderBase]: 24/162 cut-off events. [2023-11-30 04:51:17,735 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 04:51:17,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 162 events. 24/162 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 497 event pairs, 24 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 182. Up to 57 conditions per place. [2023-11-30 04:51:17,739 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 16 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-30 04:51:17,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 68 transitions, 176 flow [2023-11-30 04:51:17,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-30 04:51:17,757 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7796610169491526 [2023-11-30 04:51:17,758 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-30 04:51:17,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-30 04:51:17,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:17,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-30 04:51:17,769 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 04:51:17,774 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 04:51:17,775 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 04:51:17,780 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 1 predicate places. [2023-11-30 04:51:17,780 INFO L500 AbstractCegarLoop]: Abstraction has has 77 places, 68 transitions, 176 flow [2023-11-30 04:51:17,780 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 04:51:17,781 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:17,781 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] [2023-11-30 04:51:17,781 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:51:17,782 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 04:51:17,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:17,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1193229515, now seen corresponding path program 1 times [2023-11-30 04:51:17,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:17,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767369762] [2023-11-30 04:51:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:17,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:17,949 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 04:51:17,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:17,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767369762] [2023-11-30 04:51:17,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767369762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:17,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:17,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:17,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377540213] [2023-11-30 04:51:17,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:17,952 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:17,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:17,954 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2023-11-30 04:51:17,954 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 04:51:17,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:17,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2023-11-30 04:51:17,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:18,010 INFO L124 PetriNetUnfolderBase]: 33/188 cut-off events. [2023-11-30 04:51:18,010 INFO L125 PetriNetUnfolderBase]: For 33/35 co-relation queries the response was YES. [2023-11-30 04:51:18,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 188 events. 33/188 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 652 event pairs, 33 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 280. Up to 65 conditions per place. [2023-11-30 04:51:18,014 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 14 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-11-30 04:51:18,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 67 transitions, 202 flow [2023-11-30 04:51:18,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:18,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-30 04:51:18,017 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7994350282485876 [2023-11-30 04:51:18,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-30 04:51:18,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-30 04:51:18,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:18,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-30 04:51:18,018 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 04:51:18,020 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 04:51:18,020 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 04:51:18,021 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-11-30 04:51:18,021 INFO L500 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 202 flow [2023-11-30 04:51:18,021 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 04:51:18,021 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:18,022 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] [2023-11-30 04:51:18,022 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 04:51:18,022 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 04:51:18,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:18,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2048787689, now seen corresponding path program 1 times [2023-11-30 04:51:18,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:18,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319232792] [2023-11-30 04:51:18,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:18,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:18,155 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 04:51:18,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:18,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319232792] [2023-11-30 04:51:18,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319232792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:18,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:18,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:18,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996654054] [2023-11-30 04:51:18,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:18,156 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:18,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:18,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:18,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:18,160 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2023-11-30 04:51:18,161 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 04:51:18,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:18,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2023-11-30 04:51:18,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:18,241 INFO L124 PetriNetUnfolderBase]: 31/171 cut-off events. [2023-11-30 04:51:18,241 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-11-30 04:51:18,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 171 events. 31/171 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 523 event pairs, 9 based on Foata normal form. 3/174 useless extension candidates. Maximal degree in co-relation 316. Up to 63 conditions per place. [2023-11-30 04:51:18,243 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 16 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2023-11-30 04:51:18,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 244 flow [2023-11-30 04:51:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-11-30 04:51:18,249 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8050847457627118 [2023-11-30 04:51:18,249 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-11-30 04:51:18,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-11-30 04:51:18,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:18,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-11-30 04:51:18,251 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 04:51:18,252 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 04:51:18,253 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 04:51:18,254 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-11-30 04:51:18,254 INFO L500 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 244 flow [2023-11-30 04:51:18,255 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 04:51:18,255 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:18,255 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] [2023-11-30 04:51:18,255 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:51:18,255 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 04:51:18,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:18,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2048787690, now seen corresponding path program 1 times [2023-11-30 04:51:18,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:18,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975286174] [2023-11-30 04:51:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:18,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:18,320 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 04:51:18,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:18,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975286174] [2023-11-30 04:51:18,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975286174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:18,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:18,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:18,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964548011] [2023-11-30 04:51:18,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:18,321 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:18,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:18,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:18,323 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 118 [2023-11-30 04:51:18,323 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 04:51:18,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:18,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 118 [2023-11-30 04:51:18,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:18,388 INFO L124 PetriNetUnfolderBase]: 29/166 cut-off events. [2023-11-30 04:51:18,388 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-11-30 04:51:18,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 166 events. 29/166 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 488 event pairs, 9 based on Foata normal form. 3/169 useless extension candidates. Maximal degree in co-relation 354. Up to 58 conditions per place. [2023-11-30 04:51:18,394 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 16 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2023-11-30 04:51:18,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 67 transitions, 272 flow [2023-11-30 04:51:18,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:18,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-30 04:51:18,395 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7796610169491526 [2023-11-30 04:51:18,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-30 04:51:18,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-30 04:51:18,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:18,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-30 04:51:18,397 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 04:51:18,398 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 04:51:18,398 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 04:51:18,400 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 4 predicate places. [2023-11-30 04:51:18,400 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 67 transitions, 272 flow [2023-11-30 04:51:18,400 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 04:51:18,401 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:18,401 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:51:18,401 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:51:18,402 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:51:18,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:18,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1361486631, now seen corresponding path program 1 times [2023-11-30 04:51:18,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:18,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535892498] [2023-11-30 04:51:18,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:18,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:18,532 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 04:51:18,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535892498] [2023-11-30 04:51:18,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535892498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:18,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:18,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:18,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916323985] [2023-11-30 04:51:18,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:18,534 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:18,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:18,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:18,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:18,536 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 118 [2023-11-30 04:51:18,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 67 transitions, 272 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 04:51:18,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:18,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 118 [2023-11-30 04:51:18,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:18,594 INFO L124 PetriNetUnfolderBase]: 22/132 cut-off events. [2023-11-30 04:51:18,594 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-11-30 04:51:18,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 132 events. 22/132 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 328 event pairs, 0 based on Foata normal form. 6/138 useless extension candidates. Maximal degree in co-relation 328. Up to 51 conditions per place. [2023-11-30 04:51:18,595 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 18 selfloop transitions, 1 changer transitions 0/69 dead transitions. [2023-11-30 04:51:18,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 69 transitions, 334 flow [2023-11-30 04:51:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-11-30 04:51:18,598 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8050847457627118 [2023-11-30 04:51:18,598 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-11-30 04:51:18,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-11-30 04:51:18,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:18,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-11-30 04:51:18,599 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 04:51:18,600 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 04:51:18,600 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 04:51:18,603 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2023-11-30 04:51:18,603 INFO L500 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 334 flow [2023-11-30 04:51:18,604 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 04:51:18,604 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:51:18,604 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:51:18,605 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 04:51:18,605 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-11-30 04:51:18,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:51:18,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1361486630, now seen corresponding path program 1 times [2023-11-30 04:51:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:51:18,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958895234] [2023-11-30 04:51:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:51:18,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:51:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:51:18,681 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 04:51:18,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:51:18,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958895234] [2023-11-30 04:51:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958895234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:51:18,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:51:18,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:51:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171201146] [2023-11-30 04:51:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:51:18,686 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:51:18,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:51:18,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:51:18,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:51:18,688 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 118 [2023-11-30 04:51:18,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 334 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 04:51:18,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:51:18,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 118 [2023-11-30 04:51:18,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:51:18,728 INFO L124 PetriNetUnfolderBase]: 15/119 cut-off events. [2023-11-30 04:51:18,729 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2023-11-30 04:51:18,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 119 events. 15/119 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 268 event pairs, 0 based on Foata normal form. 6/125 useless extension candidates. Maximal degree in co-relation 297. Up to 38 conditions per place. [2023-11-30 04:51:18,730 INFO L140 encePairwiseOnDemand]: 116/118 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2023-11-30 04:51:18,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 68 transitions, 364 flow [2023-11-30 04:51:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:51:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:51:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-30 04:51:18,731 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7796610169491526 [2023-11-30 04:51:18,732 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-30 04:51:18,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-30 04:51:18,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:51:18,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-30 04:51:18,733 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 04:51:18,734 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 04:51:18,734 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 04:51:18,737 INFO L307 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2023-11-30 04:51:18,737 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 364 flow [2023-11-30 04:51:18,737 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 04:51:18,746 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i_BEv2_AllErrorsAtOnce [2023-11-30 04:51:18,785 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-11-30 04:51:18,785 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-11-30 04:51:18,785 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-11-30 04:51:18,786 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-11-30 04:51:18,786 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2023-11-30 04:51:18,786 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-11-30 04:51:18,786 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-11-30 04:51:18,786 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 9 remaining) [2023-11-30 04:51:18,786 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 9 remaining) [2023-11-30 04:51:18,787 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 04:51:18,787 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-30 04:51:18,793 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:51:18,793 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:51:18,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:51:18 BasicIcfg [2023-11-30 04:51:18,800 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:51:18,807 INFO L158 Benchmark]: Toolchain (without parser) took 3000.65ms. Allocated memory was 350.2MB in the beginning and 557.8MB in the end (delta: 207.6MB). Free memory was 285.6MB in the beginning and 353.8MB in the end (delta: -68.2MB). Peak memory consumption was 142.6MB. Max. memory is 16.0GB. [2023-11-30 04:51:18,808 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 298.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:51:18,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.52ms. Allocated memory was 350.2MB in the beginning and 557.8MB in the end (delta: 207.6MB). Free memory was 285.4MB in the beginning and 521.5MB in the end (delta: -236.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-11-30 04:51:18,808 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.36ms. Allocated memory is still 557.8MB. Free memory was 521.5MB in the beginning and 519.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:51:18,809 INFO L158 Benchmark]: Boogie Preprocessor took 29.59ms. Allocated memory is still 557.8MB. Free memory was 519.2MB in the beginning and 517.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:51:18,811 INFO L158 Benchmark]: RCFGBuilder took 596.09ms. Allocated memory is still 557.8MB. Free memory was 517.1MB in the beginning and 478.7MB in the end (delta: 38.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-11-30 04:51:18,811 INFO L158 Benchmark]: TraceAbstraction took 1818.40ms. Allocated memory is still 557.8MB. Free memory was 477.9MB in the beginning and 353.8MB in the end (delta: 124.1MB). Peak memory consumption was 123.7MB. Max. memory is 16.0GB. [2023-11-30 04:51:18,814 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 350.2MB. Free memory is still 298.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 502.52ms. Allocated memory was 350.2MB in the beginning and 557.8MB in the end (delta: 207.6MB). Free memory was 285.4MB in the beginning and 521.5MB in the end (delta: -236.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 48.36ms. Allocated memory is still 557.8MB. Free memory was 521.5MB in the beginning and 519.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.59ms. Allocated memory is still 557.8MB. Free memory was 519.2MB in the beginning and 517.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 596.09ms. Allocated memory is still 557.8MB. Free memory was 517.1MB in the beginning and 478.7MB in the end (delta: 38.4MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 1818.40ms. Allocated memory is still 557.8MB. Free memory was 477.9MB in the beginning and 353.8MB in the end (delta: 124.1MB). Peak memory consumption was 123.7MB. 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, 142 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 110 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 39 mSDtfsCounter, 110 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 0.7s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 366 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 04:51:18,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...