./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:47:27,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:47:27,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:47:27,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:47:27,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:47:27,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:47:27,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:47:27,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:47:27,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:47:27,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:47:27,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:47:27,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:47:27,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:47:27,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:47:27,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:47:27,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:47:27,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:47:27,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:47:27,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:47:27,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:47:27,268 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:47:27,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:47:27,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:47:27,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:47:27,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:47:27,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:47:27,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:47:27,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:47:27,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:47:27,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:47:27,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:47:27,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:47:27,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:47:27,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:47:27,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:47:27,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:47:27,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:47:27,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:47:27,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:47:27,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:47:27,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:47:27,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:47:27,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:47:27,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:47:27,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:47:27,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:47:27,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:47:27,312 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:47:27,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:47:27,312 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:47:27,312 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:47:27,312 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:47:27,313 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:47:27,313 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:47:27,313 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:47:27,313 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:47:27,313 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:47:27,314 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:47:27,314 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:47:27,315 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:47:27,315 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:47:27,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:47:27,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:47:27,316 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:47:27,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:47:27,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:47:27,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:47:27,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:47:27,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:47:27,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:47:27,317 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:47:27,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:47:27,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:47:27,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:47:27,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:47:27,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:47:27,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:47:27,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:47:27,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:47:27,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:47:27,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:47:27,319 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:47:27,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:47:27,319 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:47:27,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:47:27,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:47:27,319 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 [2022-04-18 18:47:27,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:47:27,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:47:27,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:47:27,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:47:27,532 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:47:27,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2022-04-18 18:47:27,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/13cdbfb35/2d02993333164bc8aa6b6dee583d654e/FLAG7e6ab6e6e [2022-04-18 18:47:28,110 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:47:28,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2022-04-18 18:47:28,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/13cdbfb35/2d02993333164bc8aa6b6dee583d654e/FLAG7e6ab6e6e [2022-04-18 18:47:28,553 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/13cdbfb35/2d02993333164bc8aa6b6dee583d654e [2022-04-18 18:47:28,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:47:28,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:47:28,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:47:28,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:47:28,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:47:28,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:47:28" (1/1) ... [2022-04-18 18:47:28,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69fd6e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:28, skipping insertion in model container [2022-04-18 18:47:28,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:47:28" (1/1) ... [2022-04-18 18:47:28,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:47:28,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:47:29,146 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i[70002,70015] [2022-04-18 18:47:29,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:47:29,169 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:47:29,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i[70002,70015] [2022-04-18 18:47:29,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:47:29,285 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:47:29,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29 WrapperNode [2022-04-18 18:47:29,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:47:29,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:47:29,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:47:29,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:47:29,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,316 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,365 INFO L137 Inliner]: procedures = 428, calls = 126, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 893 [2022-04-18 18:47:29,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:47:29,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:47:29,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:47:29,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:47:29,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:47:29,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:47:29,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:47:29,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:47:29,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (1/1) ... [2022-04-18 18:47:29,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:47:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:47:29,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 18:47:29,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 18:47:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2022-04-18 18:47:29,625 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2022-04-18 18:47:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:47:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:47:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:47:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 18:47:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2022-04-18 18:47:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:47:29,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 18:47:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:47:29,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:47:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:47:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 18:47:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2022-04-18 18:47:29,626 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2022-04-18 18:47:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:47:29,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:47:29,628 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 18:47:29,805 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:47:29,806 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:47:30,683 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:47:30,696 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:47:30,696 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-04-18 18:47:30,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:47:30 BoogieIcfgContainer [2022-04-18 18:47:30,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:47:30,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:47:30,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:47:30,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:47:30,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:47:28" (1/3) ... [2022-04-18 18:47:30,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25114da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:47:30, skipping insertion in model container [2022-04-18 18:47:30,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:29" (2/3) ... [2022-04-18 18:47:30,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25114da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:47:30, skipping insertion in model container [2022-04-18 18:47:30,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:47:30" (3/3) ... [2022-04-18 18:47:30,705 INFO L111 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2022-04-18 18:47:30,708 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:47:30,708 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:47:30,708 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 75 error locations. [2022-04-18 18:47:30,708 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:47:30,918 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 18:47:30,945 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:47:30,949 INFO L340 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-04-18 18:47:30,949 INFO L341 AbstractCegarLoop]: Starting to check reachability of 119 error locations. [2022-04-18 18:47:30,964 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:47:30,971 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 944 places, 993 transitions, 2008 flow [2022-04-18 18:47:30,973 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 944 places, 993 transitions, 2008 flow [2022-04-18 18:47:30,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 944 places, 993 transitions, 2008 flow [2022-04-18 18:47:31,594 INFO L129 PetriNetUnfolder]: 122/2117 cut-off events. [2022-04-18 18:47:31,596 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 18:47:31,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 2117 events. 122/2117 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 13462 event pairs, 0 based on Foata normal form. 0/1830 useless extension candidates. Maximal degree in co-relation 1107. Up to 16 conditions per place. [2022-04-18 18:47:31,843 INFO L116 LiptonReduction]: Number of co-enabled transitions 448314 [2022-04-18 18:50:10,062 WARN L232 SmtUtils]: Spent 9.59s on a formula simplification. DAG size of input: 121 DAG size of output: 115 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:50:22,445 WARN L232 SmtUtils]: Spent 9.63s on a formula simplification. DAG size of input: 121 DAG size of output: 115 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:50:41,452 WARN L232 SmtUtils]: Spent 14.89s on a formula simplification. DAG size of input: 133 DAG size of output: 125 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:50:46,726 WARN L232 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 117 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:51:04,430 WARN L232 SmtUtils]: Spent 17.70s on a formula simplification. DAG size of input: 133 DAG size of output: 125 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:51:10,094 WARN L232 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 117 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:51:15,534 WARN L232 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 130 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:51:39,212 WARN L232 SmtUtils]: Spent 13.38s on a formula simplification. DAG size of input: 133 DAG size of output: 127 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:51:58,207 WARN L232 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 133 DAG size of output: 127 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:52:58,021 WARN L232 SmtUtils]: Spent 53.56s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:53:36,420 WARN L232 SmtUtils]: Spent 38.40s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:53:56,534 WARN L232 SmtUtils]: Spent 20.11s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:54:40,546 WARN L232 SmtUtils]: Spent 44.01s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:56:38,380 WARN L232 SmtUtils]: Spent 1.96m on a formula simplification. DAG size of input: 207 DAG size of output: 199 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:57:22,670 WARN L232 SmtUtils]: Spent 44.28s on a formula simplification that was a NOOP. DAG size: 191 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:59:31,230 WARN L232 SmtUtils]: Spent 2.14m on a formula simplification. DAG size of input: 207 DAG size of output: 199 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:00:14,567 WARN L232 SmtUtils]: Spent 43.34s on a formula simplification that was a NOOP. DAG size: 191 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15