/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/goblint-regression/05-lval_ls_02-idx_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 04:56:55,477 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 04:56:55,543 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 04:56:55,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 04:56:55,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 04:56:55,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 04:56:55,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 04:56:55,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 04:56:55,568 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 04:56:55,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 04:56:55,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 04:56:55,572 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 04:56:55,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 04:56:55,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 04:56:55,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 04:56:55,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 04:56:55,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 04:56:55,573 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 04:56:55,573 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 04:56:55,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 04:56:55,574 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 04:56:55,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 04:56:55,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 04:56:55,574 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 04:56:55,574 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 04:56:55,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:56:55,575 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 04:56:55,575 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 04:56:55,575 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 04:56:55,575 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 04:56:55,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 04:56:55,576 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 04:56:55,576 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 04:56:55,576 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 04:56:55,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 04:56:55,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 04:56:55,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 04:56:55,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 04:56:55,763 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 04:56:55,763 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/05-lval_ls_02-idx_nr.i [2023-11-30 04:56:56,755 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 04:56:56,947 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 04:56:56,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/05-lval_ls_02-idx_nr.i [2023-11-30 04:56:56,962 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a05fae7/6863a56a059844ac82a7d79220d04d94/FLAG96933379c [2023-11-30 04:56:56,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6a05fae7/6863a56a059844ac82a7d79220d04d94 [2023-11-30 04:56:56,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 04:56:56,977 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 04:56:56,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 04:56:56,978 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 04:56:56,981 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 04:56:56,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:56:56" (1/1) ... [2023-11-30 04:56:56,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3171ab59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:56, skipping insertion in model container [2023-11-30 04:56:56,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 04:56:56" (1/1) ... [2023-11-30 04:56:57,016 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 04:56:57,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:56:57,283 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 04:56:57,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 04:56:57,342 INFO L206 MainTranslator]: Completed translation [2023-11-30 04:56:57,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57 WrapperNode [2023-11-30 04:56:57,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 04:56:57,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 04:56:57,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 04:56:57,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 04:56:57,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,368 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,384 INFO L138 Inliner]: procedures = 162, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2023-11-30 04:56:57,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 04:56:57,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 04:56:57,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 04:56:57,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 04:56:57,391 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,391 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,398 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 04:56:57,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 04:56:57,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 04:56:57,421 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 04:56:57,422 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (1/1) ... [2023-11-30 04:56:57,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 04:56:57,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:56:57,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 04:56:57,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 04:56:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 04:56:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 04:56:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 04:56:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 04:56:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-30 04:56:57,526 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-30 04:56:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 04:56:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 04:56:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 04:56:57,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 04:56:57,527 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 04:56:57,646 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 04:56:57,647 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 04:56:57,762 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 04:56:57,776 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 04:56:57,777 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-30 04:56:57,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:56:57 BoogieIcfgContainer [2023-11-30 04:56:57,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 04:56:57,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 04:56:57,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 04:56:57,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 04:56:57,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 04:56:56" (1/3) ... [2023-11-30 04:56:57,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6009118e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:56:57, skipping insertion in model container [2023-11-30 04:56:57,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 04:56:57" (2/3) ... [2023-11-30 04:56:57,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6009118e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 04:56:57, skipping insertion in model container [2023-11-30 04:56:57,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 04:56:57" (3/3) ... [2023-11-30 04:56:57,783 INFO L112 eAbstractionObserver]: Analyzing ICFG 05-lval_ls_02-idx_nr.i [2023-11-30 04:56:57,794 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 04:56:57,795 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-30 04:56:57,795 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 04:56:57,818 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 04:56:57,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 50 transitions, 104 flow [2023-11-30 04:56:57,858 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-30 04:56:57,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:56:57,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 49 events. 2/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-11-30 04:56:57,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 50 transitions, 104 flow [2023-11-30 04:56:57,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 21 places, 22 transitions, 44 flow [2023-11-30 04:56:57,869 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 04:56:57,873 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;@3ed70aaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 04:56:57,873 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-30 04:56:57,877 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 04:56:57,877 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-11-30 04:56:57,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:56:57,877 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:56:57,878 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:56:57,878 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:56:57,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:56:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash -754939005, now seen corresponding path program 1 times [2023-11-30 04:56:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:56:57,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578217146] [2023-11-30 04:56:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:56:57,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:56:57,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:56:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:56:58,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:56:58,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578217146] [2023-11-30 04:56:58,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578217146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:56:58,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:56:58,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 04:56:58,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375039995] [2023-11-30 04:56:58,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:56:58,091 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:56:58,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:56:58,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:56:58,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:56:58,120 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 50 [2023-11-30 04:56:58,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 22 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:56:58,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 50 [2023-11-30 04:56:58,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:56:58,147 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-11-30 04:56:58,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 04:56:58,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 25 events. 1/25 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-11-30 04:56:58,148 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 10 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-30 04:56:58,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 25 transitions, 74 flow [2023-11-30 04:56:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:56:58,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:56:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-30 04:56:58,156 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8 [2023-11-30 04:56:58,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-30 04:56:58,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-30 04:56:58,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:56:58,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-30 04:56:58,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,162 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) [2023-11-30 04:56:58,162 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) [2023-11-30 04:56:58,164 INFO L307 CegarLoopForPetriNet]: 21 programPoint places, 2 predicate places. [2023-11-30 04:56:58,164 INFO L500 AbstractCegarLoop]: Abstraction has has 23 places, 25 transitions, 74 flow [2023-11-30 04:56:58,164 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,164 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:56:58,164 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] [2023-11-30 04:56:58,164 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 04:56:58,165 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:56:58,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:56:58,165 INFO L85 PathProgramCache]: Analyzing trace with hash -392536826, now seen corresponding path program 1 times [2023-11-30 04:56:58,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:56:58,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725861329] [2023-11-30 04:56:58,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:56:58,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:56:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:56:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:56:58,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:56:58,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725861329] [2023-11-30 04:56:58,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725861329] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-30 04:56:58,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107882049] [2023-11-30 04:56:58,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:56:58,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:56:58,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 04:56:58,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-30 04:56:58,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-30 04:56:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:56:58,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-30 04:56:58,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-30 04:56:58,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:56:58,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-30 04:56:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 04:56:58,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107882049] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-30 04:56:58,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-30 04:56:58,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-30 04:56:58,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583474930] [2023-11-30 04:56:58,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-30 04:56:58,450 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-30 04:56:58,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:56:58,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-30 04:56:58,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-30 04:56:58,451 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 50 [2023-11-30 04:56:58,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 25 transitions, 74 flow. Second operand has 10 states, 10 states have (on average 36.1) internal successors, (361), 10 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:56:58,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 50 [2023-11-30 04:56:58,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:56:58,525 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-11-30 04:56:58,525 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-30 04:56:58,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 32 events. 1/32 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2023-11-30 04:56:58,525 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 11 selfloop transitions, 9 changer transitions 0/32 dead transitions. [2023-11-30 04:56:58,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 138 flow [2023-11-30 04:56:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-30 04:56:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-30 04:56:58,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 328 transitions. [2023-11-30 04:56:58,530 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7288888888888889 [2023-11-30 04:56:58,530 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 328 transitions. [2023-11-30 04:56:58,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 328 transitions. [2023-11-30 04:56:58,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:56:58,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 328 transitions. [2023-11-30 04:56:58,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 36.44444444444444) internal successors, (328), 9 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,533 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) [2023-11-30 04:56:58,534 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) [2023-11-30 04:56:58,534 INFO L307 CegarLoopForPetriNet]: 21 programPoint places, 10 predicate places. [2023-11-30 04:56:58,534 INFO L500 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 138 flow [2023-11-30 04:56:58,535 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.1) internal successors, (361), 10 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,535 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:56:58,535 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:56:58,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-30 04:56:58,736 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-30 04:56:58,736 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:56:58,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:56:58,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2141843674, now seen corresponding path program 2 times [2023-11-30 04:56:58,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:56:58,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318248622] [2023-11-30 04:56:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:56:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:56:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:56:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-30 04:56:58,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:56:58,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318248622] [2023-11-30 04:56:58,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318248622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:56:58,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:56:58,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:56:58,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522755734] [2023-11-30 04:56:58,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:56:58,858 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:56:58,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:56:58,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:56:58,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:56:58,859 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 50 [2023-11-30 04:56:58,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:56:58,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 50 [2023-11-30 04:56:58,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:56:58,873 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-11-30 04:56:58,874 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-30 04:56:58,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 31 events. 1/31 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 54. Up to 14 conditions per place. [2023-11-30 04:56:58,874 INFO L140 encePairwiseOnDemand]: 48/50 looper letters, 4 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-11-30 04:56:58,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 146 flow [2023-11-30 04:56:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:56:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:56:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-30 04:56:58,875 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.72 [2023-11-30 04:56:58,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-30 04:56:58,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-30 04:56:58,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:56:58,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-30 04:56:58,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,878 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) [2023-11-30 04:56:58,878 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) [2023-11-30 04:56:58,879 INFO L307 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2023-11-30 04:56:58,880 INFO L500 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 146 flow [2023-11-30 04:56:58,880 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,880 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 04:56:58,880 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 04:56:58,881 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 04:56:58,881 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-30 04:56:58,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 04:56:58,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2141843673, now seen corresponding path program 1 times [2023-11-30 04:56:58,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 04:56:58,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382316757] [2023-11-30 04:56:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 04:56:58,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 04:56:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 04:56:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-30 04:56:58,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 04:56:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382316757] [2023-11-30 04:56:58,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382316757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 04:56:58,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 04:56:58,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 04:56:58,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713816594] [2023-11-30 04:56:58,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 04:56:58,960 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 04:56:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 04:56:58,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 04:56:58,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 04:56:58,961 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 50 [2023-11-30 04:56:58,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 04:56:58,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 50 [2023-11-30 04:56:58,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 04:56:58,968 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2023-11-30 04:56:58,968 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-30 04:56:58,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 30 events. 1/30 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 54. Up to 14 conditions per place. [2023-11-30 04:56:58,969 INFO L140 encePairwiseOnDemand]: 48/50 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-11-30 04:56:58,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 148 flow [2023-11-30 04:56:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 04:56:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 04:56:58,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2023-11-30 04:56:58,970 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2023-11-30 04:56:58,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 109 transitions. [2023-11-30 04:56:58,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 109 transitions. [2023-11-30 04:56:58,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 04:56:58,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 109 transitions. [2023-11-30 04:56:58,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,971 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) [2023-11-30 04:56:58,972 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) [2023-11-30 04:56:58,973 INFO L307 CegarLoopForPetriNet]: 21 programPoint places, 12 predicate places. [2023-11-30 04:56:58,973 INFO L500 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 148 flow [2023-11-30 04:56:58,973 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 04:56:58,977 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/05-lval_ls_02-idx_nr.i_BEv2_AllErrorsAtOnce [2023-11-30 04:56:58,993 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 3 remaining) [2023-11-30 04:56:58,994 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 3 remaining) [2023-11-30 04:56:58,994 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-30 04:56:58,994 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 04:56:58,995 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-30 04:56:58,998 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 04:56:58,998 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 04:56:59,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 04:56:59 BasicIcfg [2023-11-30 04:56:59,003 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 04:56:59,003 INFO L158 Benchmark]: Toolchain (without parser) took 2026.57ms. Allocated memory is still 480.2MB. Free memory was 438.2MB in the beginning and 376.7MB in the end (delta: 61.5MB). Peak memory consumption was 62.4MB. Max. memory is 16.0GB. [2023-11-30 04:56:59,004 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 364.9MB. Free memory is still 317.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 04:56:59,004 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.57ms. Allocated memory is still 480.2MB. Free memory was 438.2MB in the beginning and 418.9MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-30 04:56:59,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.81ms. Allocated memory is still 480.2MB. Free memory was 418.9MB in the beginning and 416.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:56:59,005 INFO L158 Benchmark]: Boogie Preprocessor took 35.85ms. Allocated memory is still 480.2MB. Free memory was 416.8MB in the beginning and 415.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 04:56:59,005 INFO L158 Benchmark]: RCFGBuilder took 356.66ms. Allocated memory is still 480.2MB. Free memory was 415.4MB in the beginning and 402.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 04:56:59,005 INFO L158 Benchmark]: TraceAbstraction took 1223.55ms. Allocated memory is still 480.2MB. Free memory was 401.8MB in the beginning and 376.7MB in the end (delta: 25.0MB). Peak memory consumption was 26.7MB. Max. memory is 16.0GB. [2023-11-30 04:56:59,007 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 364.9MB. Free memory is still 317.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 365.57ms. Allocated memory is still 480.2MB. Free memory was 438.2MB in the beginning and 418.9MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.81ms. Allocated memory is still 480.2MB. Free memory was 418.9MB in the beginning and 416.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.85ms. Allocated memory is still 480.2MB. Free memory was 416.8MB in the beginning and 415.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 356.66ms. Allocated memory is still 480.2MB. Free memory was 415.4MB in the beginning and 402.4MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 1223.55ms. Allocated memory is still 480.2MB. Free memory was 401.8MB in the beginning and 376.7MB in the end (delta: 25.0MB). Peak memory consumption was 26.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 61 locations, 3 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: 1.2s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 17 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=148occurred in iteration=4, 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, 0.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 129 ConstructedInterpolants, 0 QuantifiedInterpolants, 203 SizeOfPredicates, 2 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 36/39 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 04:56:59,027 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...