/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-6bf5761-m [2023-12-05 21:12:00,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-05 21:12:00,248 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-05 21:12:00,273 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-05 21:12:00,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-05 21:12:00,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-05 21:12:00,274 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-05 21:12:00,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-05 21:12:00,275 INFO L153 SettingsManager]: * Use SBE=true [2023-12-05 21:12:00,278 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-05 21:12:00,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-05 21:12:00,279 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-05 21:12:00,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-05 21:12:00,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-05 21:12:00,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-05 21:12:00,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-05 21:12:00,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-05 21:12:00,281 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-05 21:12:00,281 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-05 21:12:00,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-05 21:12:00,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-05 21:12:00,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-05 21:12:00,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-05 21:12:00,282 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-05 21:12:00,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-05 21:12:00,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:12:00,284 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-05 21:12:00,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-05 21:12:00,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-05 21:12:00,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-05 21:12:00,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-05 21:12:00,285 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-05 21:12:00,285 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-05 21:12:00,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-12-05 21:12:00,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-05 21:12:00,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-05 21:12:00,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-05 21:12:00,507 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-05 21:12:00,508 INFO L274 PluginConnector]: CDTParser initialized [2023-12-05 21:12:00,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.i [2023-12-05 21:12:01,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-05 21:12:01,748 INFO L384 CDTParser]: Found 1 translation units. [2023-12-05 21:12:01,749 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_22-deref_read.i [2023-12-05 21:12:01,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c180a0ed/2fc7e46b0d2b41de80ec12c991b0eaca/FLAG412f33715 [2023-12-05 21:12:01,773 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c180a0ed/2fc7e46b0d2b41de80ec12c991b0eaca [2023-12-05 21:12:01,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-05 21:12:01,776 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-05 21:12:01,776 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-05 21:12:01,776 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-05 21:12:01,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-05 21:12:01,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:12:01" (1/1) ... [2023-12-05 21:12:01,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b39303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:01, skipping insertion in model container [2023-12-05 21:12:01,781 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 09:12:01" (1/1) ... [2023-12-05 21:12:01,810 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-05 21:12:02,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:12:02,033 INFO L202 MainTranslator]: Completed pre-run [2023-12-05 21:12:02,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-05 21:12:02,080 INFO L206 MainTranslator]: Completed translation [2023-12-05 21:12:02,081 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02 WrapperNode [2023-12-05 21:12:02,081 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-05 21:12:02,082 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-05 21:12:02,082 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-05 21:12:02,082 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-05 21:12:02,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,095 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,108 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-12-05 21:12:02,108 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-05 21:12:02,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-05 21:12:02,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-05 21:12:02,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-05 21:12:02,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,124 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,126 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-05 21:12:02,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-05 21:12:02,128 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-05 21:12:02,128 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-05 21:12:02,129 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (1/1) ... [2023-12-05 21:12:02,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-05 21:12:02,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-05 21:12:02,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-05 21:12:02,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-05 21:12:02,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-05 21:12:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-05 21:12:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-05 21:12:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-05 21:12:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-12-05 21:12:02,179 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-12-05 21:12:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-05 21:12:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-05 21:12:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-05 21:12:02,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-05 21:12:02,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-05 21:12:02,180 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-05 21:12:02,279 INFO L241 CfgBuilder]: Building ICFG [2023-12-05 21:12:02,280 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-05 21:12:02,410 INFO L282 CfgBuilder]: Performing block encoding [2023-12-05 21:12:02,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-05 21:12:02,423 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-05 21:12:02,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:12:02 BoogieIcfgContainer [2023-12-05 21:12:02,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-05 21:12:02,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-05 21:12:02,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-05 21:12:02,428 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-05 21:12:02,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 09:12:01" (1/3) ... [2023-12-05 21:12:02,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad1fcc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:12:02, skipping insertion in model container [2023-12-05 21:12:02,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 09:12:02" (2/3) ... [2023-12-05 21:12:02,429 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad1fcc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 09:12:02, skipping insertion in model container [2023-12-05 21:12:02,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 09:12:02" (3/3) ... [2023-12-05 21:12:02,430 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_22-deref_read.i [2023-12-05 21:12:02,441 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-05 21:12:02,441 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-12-05 21:12:02,441 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-05 21:12:02,482 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-05 21:12:02,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 50 transitions, 104 flow [2023-12-05 21:12:02,532 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2023-12-05 21:12:02,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:12:02,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-12-05 21:12:02,536 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 50 transitions, 104 flow [2023-12-05 21:12:02,538 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 49 transitions, 101 flow [2023-12-05 21:12:02,544 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-05 21:12:02,549 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;@7d208b33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-05 21:12:02,550 INFO L363 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-12-05 21:12:02,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-05 21:12:02,564 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-12-05 21:12:02,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:12:02,564 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:02,565 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:02,565 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:02,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash -294063140, now seen corresponding path program 1 times [2023-12-05 21:12:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:02,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521977862] [2023-12-05 21:12:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:02,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:02,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521977862] [2023-12-05 21:12:02,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521977862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:02,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:02,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:12:02,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113585416] [2023-12-05 21:12:02,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:02,783 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:12:02,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:12:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:12:02,803 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 50 [2023-12-05 21:12:02,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:02,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:02,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 50 [2023-12-05 21:12:02,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:02,867 INFO L124 PetriNetUnfolderBase]: 28/135 cut-off events. [2023-12-05 21:12:02,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-05 21:12:02,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 135 events. 28/135 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 463 event pairs, 16 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 180. Up to 44 conditions per place. [2023-12-05 21:12:02,869 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 19 selfloop transitions, 2 changer transitions 2/52 dead transitions. [2023-12-05 21:12:02,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 52 transitions, 153 flow [2023-12-05 21:12:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:12:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:12:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2023-12-05 21:12:02,878 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.76 [2023-12-05 21:12:02,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 114 transitions. [2023-12-05 21:12:02,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 114 transitions. [2023-12-05 21:12:02,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:02,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 114 transitions. [2023-12-05 21:12:02,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:02,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:02,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:02,887 INFO L308 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2023-12-05 21:12:02,887 INFO L500 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 153 flow [2023-12-05 21:12:02,887 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:02,887 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:02,888 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:02,888 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-05 21:12:02,888 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:02,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:02,888 INFO L85 PathProgramCache]: Analyzing trace with hash -294063139, now seen corresponding path program 1 times [2023-12-05 21:12:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:02,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177928161] [2023-12-05 21:12:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:02,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:02,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:02,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:02,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177928161] [2023-12-05 21:12:02,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177928161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:02,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:02,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-05 21:12:02,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241548209] [2023-12-05 21:12:02,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:02,994 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-05 21:12:02,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:02,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-05 21:12:02,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-05 21:12:02,995 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 50 [2023-12-05 21:12:02,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:02,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:02,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 50 [2023-12-05 21:12:02,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:03,051 INFO L124 PetriNetUnfolderBase]: 38/161 cut-off events. [2023-12-05 21:12:03,051 INFO L125 PetriNetUnfolderBase]: For 33/35 co-relation queries the response was YES. [2023-12-05 21:12:03,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334 conditions, 161 events. 38/161 cut-off events. For 33/35 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 644 event pairs, 24 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 294. Up to 60 conditions per place. [2023-12-05 21:12:03,053 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 18 selfloop transitions, 2 changer transitions 4/55 dead transitions. [2023-12-05 21:12:03,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 211 flow [2023-12-05 21:12:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-05 21:12:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-05 21:12:03,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2023-12-05 21:12:03,054 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2023-12-05 21:12:03,054 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 115 transitions. [2023-12-05 21:12:03,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 115 transitions. [2023-12-05 21:12:03,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:03,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 115 transitions. [2023-12-05 21:12:03,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,056 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,057 INFO L308 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-12-05 21:12:03,057 INFO L500 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 211 flow [2023-12-05 21:12:03,057 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,057 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:03,057 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:03,058 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-05 21:12:03,058 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:03,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:03,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2096077049, now seen corresponding path program 1 times [2023-12-05 21:12:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:03,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394984177] [2023-12-05 21:12:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:03,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:03,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:03,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394984177] [2023-12-05 21:12:03,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394984177] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:03,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:03,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-05 21:12:03,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719893871] [2023-12-05 21:12:03,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:03,251 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-05 21:12:03,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:03,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-05 21:12:03,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-05 21:12:03,253 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 50 [2023-12-05 21:12:03,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 211 flow. Second operand has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:03,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 50 [2023-12-05 21:12:03,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:03,366 INFO L124 PetriNetUnfolderBase]: 36/153 cut-off events. [2023-12-05 21:12:03,366 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-12-05 21:12:03,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 153 events. 36/153 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 562 event pairs, 25 based on Foata normal form. 9/162 useless extension candidates. Maximal degree in co-relation 352. Up to 65 conditions per place. [2023-12-05 21:12:03,367 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 20 selfloop transitions, 6 changer transitions 4/53 dead transitions. [2023-12-05 21:12:03,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 263 flow [2023-12-05 21:12:03,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-05 21:12:03,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-05 21:12:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2023-12-05 21:12:03,373 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5628571428571428 [2023-12-05 21:12:03,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 197 transitions. [2023-12-05 21:12:03,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 197 transitions. [2023-12-05 21:12:03,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:03,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 197 transitions. [2023-12-05 21:12:03,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 28.142857142857142) internal successors, (197), 7 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,379 INFO L308 CegarLoopForPetriNet]: 53 programPoint places, 7 predicate places. [2023-12-05 21:12:03,379 INFO L500 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 263 flow [2023-12-05 21:12:03,379 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,379 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:03,380 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:03,380 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-05 21:12:03,380 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:03,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:03,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2096077048, now seen corresponding path program 1 times [2023-12-05 21:12:03,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:03,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572211880] [2023-12-05 21:12:03,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:03,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:03,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572211880] [2023-12-05 21:12:03,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572211880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:03,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:03,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-05 21:12:03,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269022891] [2023-12-05 21:12:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:03,571 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-05 21:12:03,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:03,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-05 21:12:03,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-05 21:12:03,574 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 50 [2023-12-05 21:12:03,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 263 flow. Second operand has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:03,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 50 [2023-12-05 21:12:03,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:03,625 INFO L124 PetriNetUnfolderBase]: 27/129 cut-off events. [2023-12-05 21:12:03,625 INFO L125 PetriNetUnfolderBase]: For 127/127 co-relation queries the response was YES. [2023-12-05 21:12:03,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 129 events. 27/129 cut-off events. For 127/127 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 416 event pairs, 18 based on Foata normal form. 10/139 useless extension candidates. Maximal degree in co-relation 336. Up to 55 conditions per place. [2023-12-05 21:12:03,627 INFO L140 encePairwiseOnDemand]: 45/50 looper letters, 11 selfloop transitions, 4 changer transitions 15/51 dead transitions. [2023-12-05 21:12:03,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 297 flow [2023-12-05 21:12:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-05 21:12:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-05 21:12:03,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2023-12-05 21:12:03,631 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.66 [2023-12-05 21:12:03,631 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 198 transitions. [2023-12-05 21:12:03,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 198 transitions. [2023-12-05 21:12:03,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:03,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 198 transitions. [2023-12-05 21:12:03,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 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) [2023-12-05 21:12:03,634 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 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) [2023-12-05 21:12:03,636 INFO L308 CegarLoopForPetriNet]: 53 programPoint places, 11 predicate places. [2023-12-05 21:12:03,636 INFO L500 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 297 flow [2023-12-05 21:12:03,637 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.571428571428573) internal successors, (221), 7 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,637 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:03,637 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:03,637 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-05 21:12:03,637 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:03,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash -741082690, now seen corresponding path program 1 times [2023-12-05 21:12:03,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:03,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388469975] [2023-12-05 21:12:03,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:03,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:03,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:03,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388469975] [2023-12-05 21:12:03,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388469975] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:03,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:03,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-05 21:12:03,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48886945] [2023-12-05 21:12:03,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:03,836 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-05 21:12:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:03,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-05 21:12:03,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-05 21:12:03,838 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 50 [2023-12-05 21:12:03,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 297 flow. Second operand has 9 states, 9 states have (on average 24.555555555555557) internal successors, (221), 9 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:03,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 50 [2023-12-05 21:12:03,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:03,946 INFO L124 PetriNetUnfolderBase]: 24/107 cut-off events. [2023-12-05 21:12:03,946 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-12-05 21:12:03,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 107 events. 24/107 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 259 event pairs, 0 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 353. Up to 48 conditions per place. [2023-12-05 21:12:03,949 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 14 selfloop transitions, 6 changer transitions 15/53 dead transitions. [2023-12-05 21:12:03,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 53 transitions, 383 flow [2023-12-05 21:12:03,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-05 21:12:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-05 21:12:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 236 transitions. [2023-12-05 21:12:03,951 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5244444444444445 [2023-12-05 21:12:03,951 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 236 transitions. [2023-12-05 21:12:03,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 236 transitions. [2023-12-05 21:12:03,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:03,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 236 transitions. [2023-12-05 21:12:03,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 26.22222222222222) internal successors, (236), 9 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,953 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,954 INFO L308 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2023-12-05 21:12:03,955 INFO L500 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 383 flow [2023-12-05 21:12:03,955 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.555555555555557) internal successors, (221), 9 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:03,955 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-05 21:12:03,955 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-05 21:12:03,955 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-05 21:12:03,955 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2023-12-05 21:12:03,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-05 21:12:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash -741082691, now seen corresponding path program 1 times [2023-12-05 21:12:03,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-05 21:12:03,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100682626] [2023-12-05 21:12:03,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-05 21:12:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-05 21:12:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-05 21:12:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-05 21:12:04,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-05 21:12:04,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100682626] [2023-12-05 21:12:04,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100682626] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-05 21:12:04,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-05 21:12:04,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-05 21:12:04,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276940216] [2023-12-05 21:12:04,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-05 21:12:04,128 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-05 21:12:04,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-05 21:12:04,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-05 21:12:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-05 21:12:04,133 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 50 [2023-12-05 21:12:04,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:04,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-05 21:12:04,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 50 [2023-12-05 21:12:04,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-05 21:12:04,208 INFO L124 PetriNetUnfolderBase]: 21/100 cut-off events. [2023-12-05 21:12:04,209 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-12-05 21:12:04,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 100 events. 21/100 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 216 event pairs, 0 based on Foata normal form. 4/104 useless extension candidates. Maximal degree in co-relation 371. Up to 45 conditions per place. [2023-12-05 21:12:04,209 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 0 selfloop transitions, 0 changer transitions 52/52 dead transitions. [2023-12-05 21:12:04,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 52 transitions, 437 flow [2023-12-05 21:12:04,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-05 21:12:04,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-05 21:12:04,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2023-12-05 21:12:04,211 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5125 [2023-12-05 21:12:04,211 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 205 transitions. [2023-12-05 21:12:04,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 205 transitions. [2023-12-05 21:12:04,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-05 21:12:04,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 205 transitions. [2023-12-05 21:12:04,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 25.625) internal successors, (205), 8 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:04,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:04,212 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:04,214 INFO L308 CegarLoopForPetriNet]: 53 programPoint places, 24 predicate places. [2023-12-05 21:12:04,214 INFO L500 AbstractCegarLoop]: Abstraction has has 77 places, 52 transitions, 437 flow [2023-12-05 21:12:04,214 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-05 21:12:04,220 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/04-mutex_22-deref_read.i_BEv2_AllErrorsAtOnce [2023-12-05 21:12:04,247 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2023-12-05 21:12:04,248 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2023-12-05 21:12:04,248 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2023-12-05 21:12:04,248 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2023-12-05 21:12:04,248 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-12-05 21:12:04,248 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2023-12-05 21:12:04,248 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2023-12-05 21:12:04,249 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2023-12-05 21:12:04,249 INFO L810 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 9 remaining) [2023-12-05 21:12:04,249 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-05 21:12:04,249 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-05 21:12:04,253 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-05 21:12:04,253 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-05 21:12:04,261 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 09:12:04 BasicIcfg [2023-12-05 21:12:04,261 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-05 21:12:04,265 INFO L158 Benchmark]: Toolchain (without parser) took 2485.94ms. Allocated memory is still 274.7MB. Free memory was 226.6MB in the beginning and 198.3MB in the end (delta: 28.3MB). Peak memory consumption was 28.8MB. Max. memory is 8.0GB. [2023-12-05 21:12:04,267 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 155.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:12:04,267 INFO L158 Benchmark]: CACSL2BoogieTranslator took 304.85ms. Allocated memory is still 274.7MB. Free memory was 226.6MB in the beginning and 207.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-12-05 21:12:04,267 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.63ms. Allocated memory is still 274.7MB. Free memory was 207.7MB in the beginning and 206.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-05 21:12:04,267 INFO L158 Benchmark]: Boogie Preprocessor took 18.55ms. Allocated memory is still 274.7MB. Free memory was 206.2MB in the beginning and 204.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-05 21:12:04,267 INFO L158 Benchmark]: RCFGBuilder took 296.66ms. Allocated memory is still 274.7MB. Free memory was 204.6MB in the beginning and 190.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-05 21:12:04,267 INFO L158 Benchmark]: TraceAbstraction took 1835.09ms. Allocated memory is still 274.7MB. Free memory was 189.4MB in the beginning and 198.3MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-05 21:12:04,269 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 207.6MB. Free memory is still 155.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 304.85ms. Allocated memory is still 274.7MB. Free memory was 226.6MB in the beginning and 207.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.63ms. Allocated memory is still 274.7MB. Free memory was 207.7MB in the beginning and 206.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.55ms. Allocated memory is still 274.7MB. Free memory was 206.2MB in the beginning and 204.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 296.66ms. Allocated memory is still 274.7MB. Free memory was 204.6MB in the beginning and 190.4MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 1835.09ms. Allocated memory is still 274.7MB. Free memory was 189.4MB in the beginning and 198.3MB in the end (delta: -8.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 63 locations, 9 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 243 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 243 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 189 IncrementalHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 38 mSDtfsCounter, 189 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=437occurred in iteration=6, InterpolantAutomatonStates: 36, 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, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 1168 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-05 21:12:04,289 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...