/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/weaver/chl-simpl-str-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:32:37,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:32:38,087 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 05:32:38,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:32:38,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:32:38,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:32:38,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:32:38,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:32:38,119 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:32:38,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:32:38,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:32:38,123 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:32:38,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:32:38,124 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:32:38,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:32:38,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:32:38,125 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:32:38,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:32:38,125 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:32:38,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:32:38,126 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:32:38,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:32:38,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:32:38,127 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:32:38,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:32:38,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:32:38,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:32:38,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:32:38,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:32:38,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:32:38,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:32:38,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:32:38,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:32:38,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:32:38,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:32:38,378 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:32:38,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:32:38,381 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:32:38,382 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:32:38,383 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2023-11-30 05:32:39,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:32:39,654 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:32:39,654 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-trans.wvr.c [2023-11-30 05:32:39,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e6437cb/c1a69c8fe8a34153a5d9a19095143733/FLAG743f623a9 [2023-11-30 05:32:39,680 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70e6437cb/c1a69c8fe8a34153a5d9a19095143733 [2023-11-30 05:32:39,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:32:39,683 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:32:39,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:32:39,686 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:32:39,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:32:39,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c643a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39, skipping insertion in model container [2023-11-30 05:32:39,691 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,709 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:32:39,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:32:39,881 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:32:39,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:32:39,913 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:32:39,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39 WrapperNode [2023-11-30 05:32:39,914 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:32:39,915 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:32:39,915 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:32:39,915 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:32:39,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,950 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 173 [2023-11-30 05:32:39,955 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:32:39,955 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:32:39,955 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:32:39,955 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:32:39,962 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,965 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,965 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,970 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,989 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:32:39,990 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:32:39,990 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:32:39,990 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:32:39,991 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (1/1) ... [2023-11-30 05:32:39,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:32:40,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:32:40,025 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 05:32:40,052 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 05:32:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:32:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:32:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:32:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:32:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:32:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 05:32:40,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 05:32:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:32:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:32:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:32:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:32:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:32:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:32:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:32:40,060 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 05:32:40,177 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:32:40,179 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:32:40,445 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:32:40,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:32:40,461 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 05:32:40,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:32:40 BoogieIcfgContainer [2023-11-30 05:32:40,462 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:32:40,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:32:40,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:32:40,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:32:40,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:32:39" (1/3) ... [2023-11-30 05:32:40,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251888ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:32:40, skipping insertion in model container [2023-11-30 05:32:40,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:32:39" (2/3) ... [2023-11-30 05:32:40,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251888ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:32:40, skipping insertion in model container [2023-11-30 05:32:40,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:32:40" (3/3) ... [2023-11-30 05:32:40,469 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2023-11-30 05:32:40,481 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:32:40,481 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-30 05:32:40,481 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:32:40,571 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-30 05:32:40,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 231 transitions, 483 flow [2023-11-30 05:32:40,699 INFO L124 PetriNetUnfolderBase]: 13/228 cut-off events. [2023-11-30 05:32:40,699 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-30 05:32:40,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 228 events. 13/228 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 491 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-11-30 05:32:40,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 231 transitions, 483 flow [2023-11-30 05:32:40,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 204 transitions, 423 flow [2023-11-30 05:32:40,720 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:32:40,724 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;@eabc59e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:32:40,724 INFO L363 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-30 05:32:40,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:32:40,748 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-11-30 05:32:40,748 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:32:40,748 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:32:40,749 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] [2023-11-30 05:32:40,749 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 05:32:40,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:32:40,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1372605941, now seen corresponding path program 1 times [2023-11-30 05:32:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:32:40,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713908900] [2023-11-30 05:32:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:32:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:32:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:32:41,218 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 05:32:41,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:32:41,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713908900] [2023-11-30 05:32:41,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713908900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:32:41,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:32:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:32:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568738761] [2023-11-30 05:32:41,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:32:41,231 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:32:41,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:32:41,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:32:41,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:32:41,265 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2023-11-30 05:32:41,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 423 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 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 05:32:41,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:32:41,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2023-11-30 05:32:41,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:32:41,343 INFO L124 PetriNetUnfolderBase]: 6/196 cut-off events. [2023-11-30 05:32:41,343 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 05:32:41,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 196 events. 6/196 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 464 event pairs, 0 based on Foata normal form. 24/202 useless extension candidates. Maximal degree in co-relation 161. Up to 20 conditions per place. [2023-11-30 05:32:41,347 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 23 selfloop transitions, 1 changer transitions 0/196 dead transitions. [2023-11-30 05:32:41,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 455 flow [2023-11-30 05:32:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:32:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:32:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-11-30 05:32:41,360 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2023-11-30 05:32:41,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-11-30 05:32:41,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-11-30 05:32:41,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:32:41,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-11-30 05:32:41,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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 05:32:41,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:41,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:41,375 INFO L307 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-11-30 05:32:41,375 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 455 flow [2023-11-30 05:32:41,375 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 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 05:32:41,376 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:32:41,376 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] [2023-11-30 05:32:41,376 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:32:41,376 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 05:32:41,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:32:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1372605940, now seen corresponding path program 1 times [2023-11-30 05:32:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:32:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394191681] [2023-11-30 05:32:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:32:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:32:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:32:41,629 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 05:32:41,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:32:41,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394191681] [2023-11-30 05:32:41,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394191681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:32:41,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:32:41,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:32:41,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151588826] [2023-11-30 05:32:41,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:32:41,632 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:32:41,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:32:41,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:32:41,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:32:41,636 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 231 [2023-11-30 05:32:41,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 455 flow. Second operand has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 05:32:41,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:32:41,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 231 [2023-11-30 05:32:41,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:32:41,739 INFO L124 PetriNetUnfolderBase]: 6/194 cut-off events. [2023-11-30 05:32:41,740 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-30 05:32:41,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 194 events. 6/194 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 458 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 175. Up to 22 conditions per place. [2023-11-30 05:32:41,744 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 25 selfloop transitions, 1 changer transitions 0/194 dead transitions. [2023-11-30 05:32:41,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 194 transitions, 499 flow [2023-11-30 05:32:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:32:41,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:32:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 589 transitions. [2023-11-30 05:32:41,748 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.84992784992785 [2023-11-30 05:32:41,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 589 transitions. [2023-11-30 05:32:41,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 589 transitions. [2023-11-30 05:32:41,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:32:41,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 589 transitions. [2023-11-30 05:32:41,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 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 05:32:41,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:41,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:41,754 INFO L307 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-11-30 05:32:41,754 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 499 flow [2023-11-30 05:32:41,755 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 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 05:32:41,755 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:32:41,755 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:32:41,755 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:32:41,756 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 05:32:41,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:32:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1949597670, now seen corresponding path program 1 times [2023-11-30 05:32:41,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:32:41,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389724045] [2023-11-30 05:32:41,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:32:41,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:32:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:32:41,912 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 05:32:41,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:32:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389724045] [2023-11-30 05:32:41,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389724045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:32:41,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:32:41,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:32:41,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190693752] [2023-11-30 05:32:41,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:32:41,916 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:32:41,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:32:41,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:32:41,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:32:41,921 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 231 [2023-11-30 05:32:41,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 499 flow. Second operand has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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 05:32:41,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:32:41,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 231 [2023-11-30 05:32:41,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:32:41,983 INFO L124 PetriNetUnfolderBase]: 6/192 cut-off events. [2023-11-30 05:32:41,983 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-30 05:32:41,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 192 events. 6/192 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 448 event pairs, 0 based on Foata normal form. 2/180 useless extension candidates. Maximal degree in co-relation 186. Up to 20 conditions per place. [2023-11-30 05:32:41,989 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 20 selfloop transitions, 1 changer transitions 0/192 dead transitions. [2023-11-30 05:32:41,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 192 transitions, 533 flow [2023-11-30 05:32:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:32:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:32:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-11-30 05:32:41,991 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.873015873015873 [2023-11-30 05:32:41,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-11-30 05:32:41,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-11-30 05:32:41,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:32:41,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-11-30 05:32:41,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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 05:32:41,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:41,996 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:41,997 INFO L307 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-11-30 05:32:41,997 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 192 transitions, 533 flow [2023-11-30 05:32:41,998 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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 05:32:41,998 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:32:41,998 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:32:41,998 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:32:41,998 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 05:32:41,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:32:41,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1949597671, now seen corresponding path program 1 times [2023-11-30 05:32:41,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:32:41,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089451196] [2023-11-30 05:32:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:32:41,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:32:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:32:42,104 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 05:32:42,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:32:42,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089451196] [2023-11-30 05:32:42,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089451196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:32:42,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:32:42,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:32:42,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923843324] [2023-11-30 05:32:42,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:32:42,106 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:32:42,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:32:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:32:42,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:32:42,111 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2023-11-30 05:32:42,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 192 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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 05:32:42,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:32:42,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2023-11-30 05:32:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:32:42,165 INFO L124 PetriNetUnfolderBase]: 6/190 cut-off events. [2023-11-30 05:32:42,166 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-30 05:32:42,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 190 events. 6/190 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 435 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 195. Up to 18 conditions per place. [2023-11-30 05:32:42,168 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 19 selfloop transitions, 1 changer transitions 0/190 dead transitions. [2023-11-30 05:32:42,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 190 transitions, 557 flow [2023-11-30 05:32:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:32:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:32:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 595 transitions. [2023-11-30 05:32:42,170 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8585858585858586 [2023-11-30 05:32:42,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 595 transitions. [2023-11-30 05:32:42,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 595 transitions. [2023-11-30 05:32:42,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:32:42,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 595 transitions. [2023-11-30 05:32:42,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.33333333333334) internal successors, (595), 3 states have internal predecessors, (595), 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 05:32:42,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:42,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:42,175 INFO L307 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-11-30 05:32:42,175 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 190 transitions, 557 flow [2023-11-30 05:32:42,176 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 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 05:32:42,177 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:32:42,177 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:32:42,177 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:32:42,178 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 05:32:42,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:32:42,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1177828650, now seen corresponding path program 1 times [2023-11-30 05:32:42,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:32:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835399177] [2023-11-30 05:32:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:32:42,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:32:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:32:42,275 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 05:32:42,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:32:42,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835399177] [2023-11-30 05:32:42,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835399177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:32:42,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:32:42,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:32:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269653345] [2023-11-30 05:32:42,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:32:42,277 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:32:42,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:32:42,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:32:42,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:32:42,279 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 231 [2023-11-30 05:32:42,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 190 transitions, 557 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 05:32:42,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:32:42,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 231 [2023-11-30 05:32:42,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:32:42,327 INFO L124 PetriNetUnfolderBase]: 6/188 cut-off events. [2023-11-30 05:32:42,328 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-11-30 05:32:42,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 188 events. 6/188 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 429 event pairs, 0 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 204. Up to 16 conditions per place. [2023-11-30 05:32:42,330 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 18 selfloop transitions, 1 changer transitions 0/188 dead transitions. [2023-11-30 05:32:42,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 188 transitions, 583 flow [2023-11-30 05:32:42,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:32:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:32:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 603 transitions. [2023-11-30 05:32:42,332 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8701298701298701 [2023-11-30 05:32:42,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 603 transitions. [2023-11-30 05:32:42,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 603 transitions. [2023-11-30 05:32:42,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:32:42,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 603 transitions. [2023-11-30 05:32:42,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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 05:32:42,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:42,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:42,337 INFO L307 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-11-30 05:32:42,337 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 188 transitions, 583 flow [2023-11-30 05:32:42,338 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 05:32:42,338 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:32:42,338 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:32:42,338 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 05:32:42,338 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 05:32:42,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:32:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1177828651, now seen corresponding path program 1 times [2023-11-30 05:32:42,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:32:42,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785117931] [2023-11-30 05:32:42,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:32:42,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:32:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:32:42,395 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 05:32:42,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:32:42,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785117931] [2023-11-30 05:32:42,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785117931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:32:42,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:32:42,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:32:42,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021217262] [2023-11-30 05:32:42,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:32:42,398 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:32:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:32:42,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:32:42,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:32:42,399 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2023-11-30 05:32:42,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 188 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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 05:32:42,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:32:42,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2023-11-30 05:32:42,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:32:42,448 INFO L124 PetriNetUnfolderBase]: 6/186 cut-off events. [2023-11-30 05:32:42,449 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2023-11-30 05:32:42,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 186 events. 6/186 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 420 event pairs, 0 based on Foata normal form. 2/176 useless extension candidates. Maximal degree in co-relation 211. Up to 14 conditions per place. [2023-11-30 05:32:42,450 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 0 selfloop transitions, 0 changer transitions 186/186 dead transitions. [2023-11-30 05:32:42,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 186 transitions, 599 flow [2023-11-30 05:32:42,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:32:42,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:32:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 593 transitions. [2023-11-30 05:32:42,452 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8556998556998557 [2023-11-30 05:32:42,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 593 transitions. [2023-11-30 05:32:42,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 593 transitions. [2023-11-30 05:32:42,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:32:42,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 593 transitions. [2023-11-30 05:32:42,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 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 05:32:42,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:42,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 05:32:42,459 INFO L307 CegarLoopForPetriNet]: 202 programPoint places, 0 predicate places. [2023-11-30 05:32:42,459 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 186 transitions, 599 flow [2023-11-30 05:32:42,460 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 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 05:32:42,471 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/chl-simpl-str-trans.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 05:32:42,519 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-11-30 05:32:42,519 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-11-30 05:32:42,519 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-30 05:32:42,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-30 05:32:42,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-11-30 05:32:42,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-11-30 05:32:42,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-11-30 05:32:42,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-11-30 05:32:42,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-30 05:32:42,520 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-30 05:32:42,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-11-30 05:32:42,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-11-30 05:32:42,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-11-30 05:32:42,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2023-11-30 05:32:42,521 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2023-11-30 05:32:42,521 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 05:32:42,522 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-30 05:32:42,524 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:32:42,524 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:32:42,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:32:42 BasicIcfg [2023-11-30 05:32:42,535 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:32:42,535 INFO L158 Benchmark]: Toolchain (without parser) took 2851.93ms. Allocated memory is still 555.7MB. Free memory was 512.1MB in the beginning and 367.5MB in the end (delta: 144.5MB). Peak memory consumption was 144.9MB. Max. memory is 16.0GB. [2023-11-30 05:32:42,535 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 306.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:32:42,536 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.17ms. Allocated memory is still 555.7MB. Free memory was 512.1MB in the beginning and 500.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-30 05:32:42,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.07ms. Allocated memory is still 555.7MB. Free memory was 500.7MB in the beginning and 498.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:32:42,536 INFO L158 Benchmark]: Boogie Preprocessor took 33.86ms. Allocated memory is still 555.7MB. Free memory was 498.2MB in the beginning and 497.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:32:42,536 INFO L158 Benchmark]: RCFGBuilder took 472.37ms. Allocated memory is still 555.7MB. Free memory was 497.0MB in the beginning and 476.4MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-30 05:32:42,537 INFO L158 Benchmark]: TraceAbstraction took 2070.99ms. Allocated memory is still 555.7MB. Free memory was 475.6MB in the beginning and 367.5MB in the end (delta: 108.0MB). Peak memory consumption was 109.3MB. Max. memory is 16.0GB. [2023-11-30 05:32:42,538 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 358.6MB. Free memory is still 306.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 228.17ms. Allocated memory is still 555.7MB. Free memory was 512.1MB in the beginning and 500.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.07ms. Allocated memory is still 555.7MB. Free memory was 500.7MB in the beginning and 498.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.86ms. Allocated memory is still 555.7MB. Free memory was 498.2MB in the beginning and 497.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 472.37ms. Allocated memory is still 555.7MB. Free memory was 497.0MB in the beginning and 476.4MB in the end (delta: 20.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 2070.99ms. Allocated memory is still 555.7MB. Free memory was 475.6MB in the beginning and 367.5MB in the end (delta: 108.0MB). Peak memory consumption was 109.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - 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, 336 locations, 15 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: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121 IncrementalHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 34 mSDtfsCounter, 121 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred 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, 0.9s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 312 ConstructedInterpolants, 0 QuantifiedInterpolants, 1541 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 05:32:42,559 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...