/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/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:40:20,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:40:20,556 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 05:40:20,571 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:40:20,572 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:40:20,572 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:40:20,573 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:40:20,573 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:40:20,573 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:40:20,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:40:20,573 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:40:20,574 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:40:20,574 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:40:20,574 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:40:20,574 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:40:20,575 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:40:20,575 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:40:20,575 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:40:20,575 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:40:20,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:40:20,576 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:40:20,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:40:20,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:40:20,576 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:40:20,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:40:20,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:40:20,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:40:20,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:40:20,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:40:20,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:40:20,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:40:20,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:40:20,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:40:20,578 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:40:20,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:40:20,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:40:20,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:40:20,768 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:40:20,768 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:40:20,769 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-11-30 05:40:21,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:40:21,929 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:40:21,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-11-30 05:40:21,936 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd0ecfab/24f9637e4a324b0294a35afa57bc341b/FLAGe2a96a006 [2023-11-30 05:40:21,945 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd0ecfab/24f9637e4a324b0294a35afa57bc341b [2023-11-30 05:40:21,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:40:21,948 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:40:21,948 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:40:21,948 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:40:21,955 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:40:21,956 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:40:21" (1/1) ... [2023-11-30 05:40:21,957 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b733b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:21, skipping insertion in model container [2023-11-30 05:40:21,957 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:40:21" (1/1) ... [2023-11-30 05:40:21,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:40:22,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:40:22,082 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:40:22,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:40:22,106 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:40:22,107 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:40:22,111 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:40:22,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22 WrapperNode [2023-11-30 05:40:22,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:40:22,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:40:22,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:40:22,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:40:22,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,135 INFO L138 Inliner]: procedures = 22, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 83 [2023-11-30 05:40:22,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:40:22,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:40:22,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:40:22,136 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:40:22,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,148 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,149 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,161 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,162 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,164 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:40:22,165 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:40:22,165 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:40:22,165 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:40:22,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (1/1) ... [2023-11-30 05:40:22,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:40:22,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:40:22,211 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 05:40:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:40:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-30 05:40:22,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-30 05:40:22,244 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-30 05:40:22,244 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-30 05:40:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-30 05:40:22,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-30 05:40:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:40:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:40:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:40:22,245 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-30 05:40:22,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-30 05:40:22,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:40:22,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:40:22,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:40:22,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:40:22,247 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 05:40:22,230 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 05:40:22,332 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:40:22,333 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:40:22,532 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:40:22,571 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:40:22,572 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-30 05:40:22,573 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:40:22 BoogieIcfgContainer [2023-11-30 05:40:22,573 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:40:22,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:40:22,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:40:22,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:40:22,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:40:21" (1/3) ... [2023-11-30 05:40:22,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42efee7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:40:22, skipping insertion in model container [2023-11-30 05:40:22,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:40:22" (2/3) ... [2023-11-30 05:40:22,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42efee7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:40:22, skipping insertion in model container [2023-11-30 05:40:22,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:40:22" (3/3) ... [2023-11-30 05:40:22,578 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2023-11-30 05:40:22,589 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:40:22,589 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-30 05:40:22,590 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:40:22,644 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-30 05:40:22,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 131 transitions, 283 flow [2023-11-30 05:40:22,702 INFO L124 PetriNetUnfolderBase]: 8/128 cut-off events. [2023-11-30 05:40:22,703 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-30 05:40:22,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 8/128 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-11-30 05:40:22,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 131 transitions, 283 flow [2023-11-30 05:40:22,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 104 transitions, 223 flow [2023-11-30 05:40:22,716 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:40:22,721 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;@2dde6cea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:40:22,721 INFO L363 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-30 05:40:22,729 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:40:22,729 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2023-11-30 05:40:22,729 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:40:22,729 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:40:22,730 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] [2023-11-30 05:40:22,730 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 05:40:22,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:40:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1679906166, now seen corresponding path program 1 times [2023-11-30 05:40:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:40:22,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24061451] [2023-11-30 05:40:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:40:22,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:40:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:40:23,164 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 05:40:23,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:40:23,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24061451] [2023-11-30 05:40:23,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24061451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:40:23,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:40:23,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:40:23,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278659427] [2023-11-30 05:40:23,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:40:23,172 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:40:23,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:40:23,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:40:23,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:40:23,193 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 131 [2023-11-30 05:40:23,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 223 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 05:40:23,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:40:23,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 131 [2023-11-30 05:40:23,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:40:23,353 INFO L124 PetriNetUnfolderBase]: 181/483 cut-off events. [2023-11-30 05:40:23,353 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-30 05:40:23,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 784 conditions, 483 events. 181/483 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2136 event pairs, 91 based on Foata normal form. 156/567 useless extension candidates. Maximal degree in co-relation 500. Up to 260 conditions per place. [2023-11-30 05:40:23,361 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 26 selfloop transitions, 1 changer transitions 2/98 dead transitions. [2023-11-30 05:40:23,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 267 flow [2023-11-30 05:40:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:40:23,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:40:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-30 05:40:23,376 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7659033078880407 [2023-11-30 05:40:23,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-30 05:40:23,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-30 05:40:23,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:40:23,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-30 05:40:23,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 05:40:23,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:23,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:23,390 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-11-30 05:40:23,390 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 98 transitions, 267 flow [2023-11-30 05:40:23,391 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 05:40:23,391 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:40:23,391 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] [2023-11-30 05:40:23,392 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:40:23,392 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 05:40:23,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:40:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1679906167, now seen corresponding path program 1 times [2023-11-30 05:40:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:40:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464382238] [2023-11-30 05:40:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:40:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:40:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:40:23,716 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 05:40:23,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:40:23,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464382238] [2023-11-30 05:40:23,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464382238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:40:23,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:40:23,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:40:23,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808427111] [2023-11-30 05:40:23,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:40:23,718 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:40:23,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:40:23,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:40:23,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:40:23,719 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 131 [2023-11-30 05:40:23,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 98 transitions, 267 flow. Second operand has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 05:40:23,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:40:23,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 131 [2023-11-30 05:40:23,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:40:23,813 INFO L124 PetriNetUnfolderBase]: 170/469 cut-off events. [2023-11-30 05:40:23,813 INFO L125 PetriNetUnfolderBase]: For 107/131 co-relation queries the response was YES. [2023-11-30 05:40:23,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1002 conditions, 469 events. 170/469 cut-off events. For 107/131 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2050 event pairs, 85 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 563. Up to 251 conditions per place. [2023-11-30 05:40:23,818 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 28 selfloop transitions, 1 changer transitions 2/96 dead transitions. [2023-11-30 05:40:23,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 319 flow [2023-11-30 05:40:23,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:40:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:40:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-11-30 05:40:23,821 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7302798982188295 [2023-11-30 05:40:23,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-11-30 05:40:23,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-11-30 05:40:23,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:40:23,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-11-30 05:40:23,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 05:40:23,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:23,824 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:23,824 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-11-30 05:40:23,825 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 319 flow [2023-11-30 05:40:23,825 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 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 05:40:23,825 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:40:23,825 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] [2023-11-30 05:40:23,825 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:40:23,826 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 05:40:23,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:40:23,826 INFO L85 PathProgramCache]: Analyzing trace with hash 866788098, now seen corresponding path program 1 times [2023-11-30 05:40:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:40:23,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935682280] [2023-11-30 05:40:23,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:40:23,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:40:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:40:23,913 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 05:40:23,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:40:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935682280] [2023-11-30 05:40:23,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935682280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:40:23,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:40:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:40:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604513418] [2023-11-30 05:40:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:40:23,919 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:40:23,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:40:23,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:40:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:40:23,921 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 131 [2023-11-30 05:40:23,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:40:23,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:40:23,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 131 [2023-11-30 05:40:23,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:40:24,007 INFO L124 PetriNetUnfolderBase]: 156/432 cut-off events. [2023-11-30 05:40:24,007 INFO L125 PetriNetUnfolderBase]: For 236/290 co-relation queries the response was YES. [2023-11-30 05:40:24,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 432 events. 156/432 cut-off events. For 236/290 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1786 event pairs, 77 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 679. Up to 229 conditions per place. [2023-11-30 05:40:24,010 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 24 selfloop transitions, 1 changer transitions 2/94 dead transitions. [2023-11-30 05:40:24,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 359 flow [2023-11-30 05:40:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:40:24,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:40:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-11-30 05:40:24,011 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7506361323155216 [2023-11-30 05:40:24,012 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-11-30 05:40:24,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-11-30 05:40:24,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:40:24,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-11-30 05:40:24,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 05:40:24,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:24,026 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:24,027 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-11-30 05:40:24,027 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 94 transitions, 359 flow [2023-11-30 05:40:24,027 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:40:24,027 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:40:24,027 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] [2023-11-30 05:40:24,027 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:40:24,028 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-11-30 05:40:24,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:40:24,028 INFO L85 PathProgramCache]: Analyzing trace with hash 866788099, now seen corresponding path program 1 times [2023-11-30 05:40:24,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:40:24,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980035515] [2023-11-30 05:40:24,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:40:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:40:24,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:40:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:40:24,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:40:24,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980035515] [2023-11-30 05:40:24,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980035515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:40:24,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:40:24,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:40:24,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088464610] [2023-11-30 05:40:24,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:40:24,152 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:40:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:40:24,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:40:24,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:40:24,156 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 131 [2023-11-30 05:40:24,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 94 transitions, 359 flow. Second operand has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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 05:40:24,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:40:24,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 131 [2023-11-30 05:40:24,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:40:24,233 INFO L124 PetriNetUnfolderBase]: 142/395 cut-off events. [2023-11-30 05:40:24,233 INFO L125 PetriNetUnfolderBase]: For 397/485 co-relation queries the response was YES. [2023-11-30 05:40:24,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 395 events. 142/395 cut-off events. For 397/485 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1579 event pairs, 69 based on Foata normal form. 5/356 useless extension candidates. Maximal degree in co-relation 793. Up to 207 conditions per place. [2023-11-30 05:40:24,237 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 24 selfloop transitions, 1 changer transitions 2/92 dead transitions. [2023-11-30 05:40:24,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 92 transitions, 399 flow [2023-11-30 05:40:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:40:24,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:40:24,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 283 transitions. [2023-11-30 05:40:24,238 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7201017811704835 [2023-11-30 05:40:24,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 283 transitions. [2023-11-30 05:40:24,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 283 transitions. [2023-11-30 05:40:24,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:40:24,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 283 transitions. [2023-11-30 05:40:24,239 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 05:40:24,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:24,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:24,242 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-11-30 05:40:24,242 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 399 flow [2023-11-30 05:40:24,243 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.5) internal successors, (350), 4 states have internal predecessors, (350), 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 05:40:24,243 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:40:24,243 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] [2023-11-30 05:40:24,243 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:40:24,243 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 05:40:24,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:40:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1905351683, now seen corresponding path program 1 times [2023-11-30 05:40:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:40:24,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685251818] [2023-11-30 05:40:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:40:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:40:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:40:24,319 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 05:40:24,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:40:24,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685251818] [2023-11-30 05:40:24,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685251818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:40:24,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:40:24,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:40:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966674446] [2023-11-30 05:40:24,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:40:24,320 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:40:24,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:40:24,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:40:24,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:40:24,321 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 131 [2023-11-30 05:40:24,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 05:40:24,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:40:24,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 131 [2023-11-30 05:40:24,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:40:24,382 INFO L124 PetriNetUnfolderBase]: 131/367 cut-off events. [2023-11-30 05:40:24,383 INFO L125 PetriNetUnfolderBase]: For 554/658 co-relation queries the response was YES. [2023-11-30 05:40:24,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 367 events. 131/367 cut-off events. For 554/658 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1391 event pairs, 63 based on Foata normal form. 5/332 useless extension candidates. Maximal degree in co-relation 852. Up to 189 conditions per place. [2023-11-30 05:40:24,386 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 21 selfloop transitions, 1 changer transitions 2/90 dead transitions. [2023-11-30 05:40:24,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 90 transitions, 433 flow [2023-11-30 05:40:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:40:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:40:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-30 05:40:24,388 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7659033078880407 [2023-11-30 05:40:24,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-30 05:40:24,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-30 05:40:24,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:40:24,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-30 05:40:24,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 05:40:24,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:24,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:24,391 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-11-30 05:40:24,391 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 433 flow [2023-11-30 05:40:24,392 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 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 05:40:24,392 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:40:24,392 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] [2023-11-30 05:40:24,392 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 05:40:24,393 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 05:40:24,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:40:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1905351684, now seen corresponding path program 1 times [2023-11-30 05:40:24,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:40:24,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777950863] [2023-11-30 05:40:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:40:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:40:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:40:24,456 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 05:40:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:40:24,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777950863] [2023-11-30 05:40:24,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777950863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:40:24,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:40:24,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:40:24,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554927523] [2023-11-30 05:40:24,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:40:24,458 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:40:24,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:40:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:40:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:40:24,460 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 131 [2023-11-30 05:40:24,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 433 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 05:40:24,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:40:24,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 131 [2023-11-30 05:40:24,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:40:24,531 INFO L124 PetriNetUnfolderBase]: 120/339 cut-off events. [2023-11-30 05:40:24,532 INFO L125 PetriNetUnfolderBase]: For 753/873 co-relation queries the response was YES. [2023-11-30 05:40:24,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1430 conditions, 339 events. 120/339 cut-off events. For 753/873 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1198 event pairs, 57 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 879. Up to 171 conditions per place. [2023-11-30 05:40:24,533 INFO L140 encePairwiseOnDemand]: 128/131 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2023-11-30 05:40:24,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 88 transitions, 453 flow [2023-11-30 05:40:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:40:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:40:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-11-30 05:40:24,534 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7404580152671756 [2023-11-30 05:40:24,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-11-30 05:40:24,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-11-30 05:40:24,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:40:24,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-11-30 05:40:24,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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 05:40:24,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:24,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 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 05:40:24,538 INFO L307 CegarLoopForPetriNet]: 107 programPoint places, 0 predicate places. [2023-11-30 05:40:24,538 INFO L500 AbstractCegarLoop]: Abstraction has has 107 places, 88 transitions, 453 flow [2023-11-30 05:40:24,538 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 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 05:40:24,544 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/popl20-threaded-sum-3.wvr.c_BEv2_AllErrorsAtOnce [2023-11-30 05:40:24,567 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-11-30 05:40:24,567 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 15 remaining) [2023-11-30 05:40:24,568 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2023-11-30 05:40:24,569 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2023-11-30 05:40:24,569 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-30 05:40:24,569 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-30 05:40:24,572 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:40:24,572 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:40:24,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:40:24 BasicIcfg [2023-11-30 05:40:24,581 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:40:24,581 INFO L158 Benchmark]: Toolchain (without parser) took 2633.38ms. Allocated memory is still 427.8MB. Free memory was 389.4MB in the beginning and 383.4MB in the end (delta: 6.0MB). Peak memory consumption was 245.9MB. Max. memory is 16.0GB. [2023-11-30 05:40:24,581 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 316.7MB. Free memory is still 272.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:40:24,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.31ms. Allocated memory is still 427.8MB. Free memory was 389.4MB in the beginning and 377.6MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-30 05:40:24,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.77ms. Allocated memory is still 427.8MB. Free memory was 377.6MB in the beginning and 376.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:40:24,582 INFO L158 Benchmark]: Boogie Preprocessor took 28.97ms. Allocated memory is still 427.8MB. Free memory was 376.0MB in the beginning and 374.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:40:24,582 INFO L158 Benchmark]: RCFGBuilder took 407.95ms. Allocated memory is still 427.8MB. Free memory was 374.7MB in the beginning and 352.4MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-11-30 05:40:24,582 INFO L158 Benchmark]: TraceAbstraction took 2006.63ms. Allocated memory is still 427.8MB. Free memory was 351.7MB in the beginning and 383.4MB in the end (delta: -31.7MB). Peak memory consumption was 208.2MB. Max. memory is 16.0GB. [2023-11-30 05:40:24,583 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 316.7MB. Free memory is still 272.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 163.31ms. Allocated memory is still 427.8MB. Free memory was 389.4MB in the beginning and 377.6MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 22.77ms. Allocated memory is still 427.8MB. Free memory was 377.6MB in the beginning and 376.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.97ms. Allocated memory is still 427.8MB. Free memory was 376.0MB in the beginning and 374.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 407.95ms. Allocated memory is still 427.8MB. Free memory was 374.7MB in the beginning and 352.4MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 2006.63ms. Allocated memory is still 427.8MB. Free memory was 351.7MB in the beginning and 383.4MB in the end (delta: -31.7MB). Peak memory consumption was 208.2MB. 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, 152 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: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 127 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 152 IncrementalHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 35 mSDtfsCounter, 152 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=453occurred 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, 276 NumberOfCodeBlocks, 276 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 270 ConstructedInterpolants, 0 QuantifiedInterpolants, 1288 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 05:40:24,597 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...