/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/13-privatized_67-pthread_cond_wait_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 05:03:05,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 05:03:05,134 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 05:03:05,160 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 05:03:05,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 05:03:05,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 05:03:05,162 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 05:03:05,162 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 05:03:05,162 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 05:03:05,167 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 05:03:05,167 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 05:03:05,167 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 05:03:05,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 05:03:05,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 05:03:05,169 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 05:03:05,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 05:03:05,169 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 05:03:05,169 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 05:03:05,169 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 05:03:05,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 05:03:05,169 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 05:03:05,170 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 05:03:05,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 05:03:05,170 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 05:03:05,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 05:03:05,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:03:05,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 05:03:05,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 05:03:05,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 05:03:05,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 05:03:05,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 05:03:05,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 05:03:05,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 05:03:05,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-11-30 05:03:05,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 05:03:05,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 05:03:05,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 05:03:05,367 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 05:03:05,367 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 05:03:05,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-30 05:03:06,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 05:03:06,526 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 05:03:06,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-30 05:03:06,546 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fe209869/83ff30328fc744e7befceddffb22e0da/FLAG41a764f1e [2023-11-30 05:03:06,556 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fe209869/83ff30328fc744e7befceddffb22e0da [2023-11-30 05:03:06,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 05:03:06,559 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 05:03:06,560 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 05:03:06,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 05:03:06,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 05:03:06,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:03:06" (1/1) ... [2023-11-30 05:03:06,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b5653a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:06, skipping insertion in model container [2023-11-30 05:03:06,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 05:03:06" (1/1) ... [2023-11-30 05:03:06,611 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 05:03:06,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:03:06,992 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 05:03:07,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 05:03:07,091 WARN L675 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-11-30 05:03:07,096 INFO L206 MainTranslator]: Completed translation [2023-11-30 05:03:07,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07 WrapperNode [2023-11-30 05:03:07,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 05:03:07,097 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 05:03:07,097 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 05:03:07,097 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 05:03:07,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,137 INFO L138 Inliner]: procedures = 355, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2023-11-30 05:03:07,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 05:03:07,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 05:03:07,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 05:03:07,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 05:03:07,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,169 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 05:03:07,174 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 05:03:07,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 05:03:07,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 05:03:07,175 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (1/1) ... [2023-11-30 05:03:07,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 05:03:07,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 05:03:07,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 05:03:07,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 05:03:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-11-30 05:03:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-30 05:03:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-30 05:03:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-30 05:03:07,249 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-30 05:03:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 05:03:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 05:03:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 05:03:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 05:03:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 05:03:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 05:03:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 05:03:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 05:03:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 05:03:07,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 05:03:07,251 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 05:03:07,444 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 05:03:07,445 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 05:03:07,589 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 05:03:07,618 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 05:03:07,618 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-30 05:03:07,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:03:07 BoogieIcfgContainer [2023-11-30 05:03:07,620 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 05:03:07,622 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 05:03:07,622 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 05:03:07,624 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 05:03:07,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 05:03:06" (1/3) ... [2023-11-30 05:03:07,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fb4c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:03:07, skipping insertion in model container [2023-11-30 05:03:07,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 05:03:07" (2/3) ... [2023-11-30 05:03:07,625 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fb4c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 05:03:07, skipping insertion in model container [2023-11-30 05:03:07,625 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 05:03:07" (3/3) ... [2023-11-30 05:03:07,626 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_67-pthread_cond_wait_unknown_1_pos.i [2023-11-30 05:03:07,639 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 05:03:07,639 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-30 05:03:07,640 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 05:03:07,675 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-30 05:03:07,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 105 transitions, 224 flow [2023-11-30 05:03:07,778 INFO L124 PetriNetUnfolderBase]: 2/103 cut-off events. [2023-11-30 05:03:07,779 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 05:03:07,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 103 events. 2/103 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-30 05:03:07,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 105 transitions, 224 flow [2023-11-30 05:03:07,785 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 92 transitions, 193 flow [2023-11-30 05:03:07,810 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 05:03:07,816 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;@455676a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 05:03:07,817 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-30 05:03:07,828 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 05:03:07,828 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-30 05:03:07,828 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 05:03:07,829 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:03:07,829 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:03:07,830 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:03:07,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:03:07,834 INFO L85 PathProgramCache]: Analyzing trace with hash -549333524, now seen corresponding path program 1 times [2023-11-30 05:03:07,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:03:07,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72044394] [2023-11-30 05:03:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:03:07,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:03:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:03:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:03:08,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:03:08,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72044394] [2023-11-30 05:03:08,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72044394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:03:08,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:03:08,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:03:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276817924] [2023-11-30 05:03:08,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:03:08,325 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:03:08,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:03:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:03:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:03:08,352 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 105 [2023-11-30 05:03:08,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 92 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:03:08,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 105 [2023-11-30 05:03:08,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:03:08,493 INFO L124 PetriNetUnfolderBase]: 70/439 cut-off events. [2023-11-30 05:03:08,494 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-30 05:03:08,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 439 events. 70/439 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2580 event pairs, 70 based on Foata normal form. 32/419 useless extension candidates. Maximal degree in co-relation 516. Up to 143 conditions per place. [2023-11-30 05:03:08,500 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 23 selfloop transitions, 1 changer transitions 1/85 dead transitions. [2023-11-30 05:03:08,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 229 flow [2023-11-30 05:03:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:03:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:03:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 239 transitions. [2023-11-30 05:03:08,512 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7587301587301587 [2023-11-30 05:03:08,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 239 transitions. [2023-11-30 05:03:08,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 239 transitions. [2023-11-30 05:03:08,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:03:08,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 239 transitions. [2023-11-30 05:03:08,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,526 INFO L307 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2023-11-30 05:03:08,526 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 229 flow [2023-11-30 05:03:08,526 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,526 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:03:08,526 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:03:08,527 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 05:03:08,527 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:03:08,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:03:08,528 INFO L85 PathProgramCache]: Analyzing trace with hash -549333523, now seen corresponding path program 1 times [2023-11-30 05:03:08,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:03:08,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069067024] [2023-11-30 05:03:08,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:03:08,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:03:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:03:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:03:08,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:03:08,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069067024] [2023-11-30 05:03:08,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069067024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:03:08,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:03:08,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 05:03:08,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500366487] [2023-11-30 05:03:08,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:03:08,736 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 05:03:08,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:03:08,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 05:03:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-30 05:03:08,738 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 105 [2023-11-30 05:03:08,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 229 flow. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:03:08,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 105 [2023-11-30 05:03:08,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:03:08,828 INFO L124 PetriNetUnfolderBase]: 54/350 cut-off events. [2023-11-30 05:03:08,829 INFO L125 PetriNetUnfolderBase]: For 67/106 co-relation queries the response was YES. [2023-11-30 05:03:08,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 350 events. 54/350 cut-off events. For 67/106 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1833 event pairs, 54 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 488. Up to 119 conditions per place. [2023-11-30 05:03:08,831 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 23 selfloop transitions, 1 changer transitions 1/83 dead transitions. [2023-11-30 05:03:08,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 83 transitions, 271 flow [2023-11-30 05:03:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:03:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:03:08,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-11-30 05:03:08,835 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-30 05:03:08,835 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-11-30 05:03:08,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-11-30 05:03:08,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:03:08,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-11-30 05:03:08,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,838 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,838 INFO L307 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2023-11-30 05:03:08,839 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 83 transitions, 271 flow [2023-11-30 05:03:08,839 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 4 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,839 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:03:08,839 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:03:08,839 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 05:03:08,840 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:03:08,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:03:08,840 INFO L85 PathProgramCache]: Analyzing trace with hash 453875764, now seen corresponding path program 1 times [2023-11-30 05:03:08,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:03:08,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954507355] [2023-11-30 05:03:08,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:03:08,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:03:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:03:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:03:08,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:03:08,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954507355] [2023-11-30 05:03:08,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954507355] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:03:08,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:03:08,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:03:08,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238641865] [2023-11-30 05:03:08,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:03:08,921 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:03:08,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:03:08,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:03:08,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:03:08,925 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 105 [2023-11-30 05:03:08,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 83 transitions, 271 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 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) [2023-11-30 05:03:08,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:03:08,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 105 [2023-11-30 05:03:08,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:03:08,982 INFO L124 PetriNetUnfolderBase]: 48/327 cut-off events. [2023-11-30 05:03:08,982 INFO L125 PetriNetUnfolderBase]: For 172/246 co-relation queries the response was YES. [2023-11-30 05:03:08,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 673 conditions, 327 events. 48/327 cut-off events. For 172/246 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1645 event pairs, 48 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 538. Up to 105 conditions per place. [2023-11-30 05:03:08,984 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 21 selfloop transitions, 1 changer transitions 1/81 dead transitions. [2023-11-30 05:03:08,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 81 transitions, 305 flow [2023-11-30 05:03:08,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:03:08,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:03:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-11-30 05:03:08,985 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.746031746031746 [2023-11-30 05:03:08,985 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-11-30 05:03:08,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-11-30 05:03:08,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:03:08,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-11-30 05:03:08,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,987 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:08,988 INFO L307 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2023-11-30 05:03:08,988 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 305 flow [2023-11-30 05:03:08,988 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 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) [2023-11-30 05:03:08,988 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 05:03:08,989 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 05:03:08,989 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 05:03:08,989 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2023-11-30 05:03:08,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 05:03:08,989 INFO L85 PathProgramCache]: Analyzing trace with hash 453875765, now seen corresponding path program 1 times [2023-11-30 05:03:08,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 05:03:08,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297180821] [2023-11-30 05:03:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 05:03:08,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 05:03:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 05:03:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 05:03:09,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 05:03:09,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297180821] [2023-11-30 05:03:09,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297180821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 05:03:09,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 05:03:09,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 05:03:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113387575] [2023-11-30 05:03:09,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 05:03:09,113 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 05:03:09,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 05:03:09,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 05:03:09,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 05:03:09,115 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 105 [2023-11-30 05:03:09,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:09,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 05:03:09,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 105 [2023-11-30 05:03:09,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 05:03:09,186 INFO L124 PetriNetUnfolderBase]: 42/304 cut-off events. [2023-11-30 05:03:09,186 INFO L125 PetriNetUnfolderBase]: For 317/419 co-relation queries the response was YES. [2023-11-30 05:03:09,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 304 events. 42/304 cut-off events. For 317/419 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1460 event pairs, 42 based on Foata normal form. 6/288 useless extension candidates. Maximal degree in co-relation 575. Up to 91 conditions per place. [2023-11-30 05:03:09,187 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 0 selfloop transitions, 0 changer transitions 79/79 dead transitions. [2023-11-30 05:03:09,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 79 transitions, 333 flow [2023-11-30 05:03:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-30 05:03:09,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-30 05:03:09,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-11-30 05:03:09,189 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7555555555555555 [2023-11-30 05:03:09,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-11-30 05:03:09,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-11-30 05:03:09,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 05:03:09,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-11-30 05:03:09,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:09,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:09,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 105.0) internal successors, (420), 4 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:09,191 INFO L307 CegarLoopForPetriNet]: 97 programPoint places, -3 predicate places. [2023-11-30 05:03:09,192 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 79 transitions, 333 flow [2023-11-30 05:03:09,193 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-30 05:03:09,199 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/13-privatized_67-pthread_cond_wait_unknown_1_pos.i_BEv2_AllErrorsAtOnce [2023-11-30 05:03:09,228 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2023-11-30 05:03:09,228 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 10 remaining) [2023-11-30 05:03:09,228 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 10 remaining) [2023-11-30 05:03:09,229 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2023-11-30 05:03:09,229 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2023-11-30 05:03:09,229 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2023-11-30 05:03:09,229 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2023-11-30 05:03:09,229 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2023-11-30 05:03:09,229 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 10 remaining) [2023-11-30 05:03:09,229 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2023-11-30 05:03:09,229 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 05:03:09,230 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-30 05:03:09,232 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 05:03:09,232 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 05:03:09,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 05:03:09 BasicIcfg [2023-11-30 05:03:09,238 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 05:03:09,239 INFO L158 Benchmark]: Toolchain (without parser) took 2679.40ms. Allocated memory was 362.8MB in the beginning and 568.3MB in the end (delta: 205.5MB). Free memory was 314.2MB in the beginning and 417.0MB in the end (delta: -102.8MB). Peak memory consumption was 105.5MB. Max. memory is 16.0GB. [2023-11-30 05:03:09,239 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 314.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 05:03:09,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 536.19ms. Allocated memory is still 362.8MB. Free memory was 314.2MB in the beginning and 276.1MB in the end (delta: 38.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-11-30 05:03:09,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.45ms. Allocated memory is still 362.8MB. Free memory was 276.1MB in the beginning and 273.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-30 05:03:09,244 INFO L158 Benchmark]: Boogie Preprocessor took 35.69ms. Allocated memory is still 362.8MB. Free memory was 273.0MB in the beginning and 270.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 05:03:09,244 INFO L158 Benchmark]: RCFGBuilder took 446.27ms. Allocated memory is still 362.8MB. Free memory was 270.4MB in the beginning and 247.8MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-11-30 05:03:09,245 INFO L158 Benchmark]: TraceAbstraction took 1615.98ms. Allocated memory was 362.8MB in the beginning and 568.3MB in the end (delta: 205.5MB). Free memory was 247.3MB in the beginning and 417.0MB in the end (delta: -169.7MB). Peak memory consumption was 38.4MB. Max. memory is 16.0GB. [2023-11-30 05:03:09,247 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 362.8MB. Free memory is still 314.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 536.19ms. Allocated memory is still 362.8MB. Free memory was 314.2MB in the beginning and 276.1MB in the end (delta: 38.0MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.45ms. Allocated memory is still 362.8MB. Free memory was 276.1MB in the beginning and 273.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.69ms. Allocated memory is still 362.8MB. Free memory was 273.0MB in the beginning and 270.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 446.27ms. Allocated memory is still 362.8MB. Free memory was 270.4MB in the beginning and 247.8MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 1615.98ms. Allocated memory was 362.8MB in the beginning and 568.3MB in the end (delta: 205.5MB). Free memory was 247.3MB in the beginning and 417.0MB in the end (delta: -169.7MB). Peak memory consumption was 38.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 142 locations, 10 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: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 75 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 75 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 29 mSDtfsCounter, 88 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=333occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 0.6s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-30 05:03:09,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...