/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -tc ../../../trunk/examples/toolchains/BuchiAutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.ample-buchi-a4216cd-m [2025-04-26 16:03:59,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-26 16:03:59,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2025-04-26 16:03:59,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-26 16:03:59,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-26 16:03:59,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-26 16:03:59,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-26 16:03:59,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-26 16:03:59,799 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-26 16:03:59,799 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-26 16:03:59,799 INFO L153 SettingsManager]: * Use SBE=true [2025-04-26 16:03:59,799 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2025-04-26 16:03:59,799 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2025-04-26 16:03:59,799 INFO L153 SettingsManager]: * Use old map elimination=false [2025-04-26 16:03:59,799 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2025-04-26 16:03:59,799 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2025-04-26 16:03:59,799 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2025-04-26 16:03:59,799 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-26 16:03:59,800 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2025-04-26 16:03:59,802 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-26 16:03:59,802 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-26 16:03:59,802 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-26 16:03:59,802 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-26 16:03:59,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-26 16:03:59,802 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2025-04-26 16:03:59,802 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR [2025-04-26 16:03:59,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-26 16:04:00,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-26 16:04:00,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-26 16:04:00,006 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-26 16:04:00,007 INFO L274 PluginConnector]: CDTParser initialized [2025-04-26 16:04:00,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2025-04-26 16:04:01,297 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/03ffcc7bb/439d5bda54cc4704853285bc19a3f443/FLAG53783c690 [2025-04-26 16:04:01,562 INFO L389 CDTParser]: Found 1 translation units. [2025-04-26 16:04:01,562 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-complex/bounded_buffer.i [2025-04-26 16:04:01,582 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/03ffcc7bb/439d5bda54cc4704853285bc19a3f443/FLAG53783c690 [2025-04-26 16:04:02,347 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/03ffcc7bb/439d5bda54cc4704853285bc19a3f443 [2025-04-26 16:04:02,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-26 16:04:02,350 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-26 16:04:02,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-26 16:04:02,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-26 16:04:02,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-26 16:04:02,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:02,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3641188b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02, skipping insertion in model container [2025-04-26 16:04:02,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:02,405 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-26 16:04:02,818 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-26 16:04:02,826 INFO L200 MainTranslator]: Completed pre-run [2025-04-26 16:04:02,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-26 16:04:02,988 INFO L204 MainTranslator]: Completed translation [2025-04-26 16:04:02,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02 WrapperNode [2025-04-26 16:04:02,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-26 16:04:02,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-26 16:04:02,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-26 16:04:02,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-26 16:04:02,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,046 INFO L138 Inliner]: procedures = 429, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 447 [2025-04-26 16:04:03,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-26 16:04:03,051 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-26 16:04:03,051 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-26 16:04:03,051 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-26 16:04:03,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,077 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,084 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,086 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,087 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-26 16:04:03,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-26 16:04:03,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-26 16:04:03,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-26 16:04:03,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (1/1) ... [2025-04-26 16:04:03,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2025-04-26 16:04:03,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2025-04-26 16:04:03,131 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2025-04-26 16:04:03,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2025-04-26 16:04:03,150 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-04-26 16:04:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-26 16:04:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-04-26 16:04:03,151 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-04-26 16:04:03,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-04-26 16:04:03,153 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-26 16:04:03,321 INFO L234 CfgBuilder]: Building ICFG [2025-04-26 16:04:03,323 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-26 16:04:03,862 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-26 16:04:03,862 INFO L283 CfgBuilder]: Performing block encoding [2025-04-26 16:04:03,892 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-26 16:04:03,892 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2025-04-26 16:04:03,892 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:04:03 BoogieIcfgContainer [2025-04-26 16:04:03,892 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-26 16:04:03,893 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2025-04-26 16:04:03,893 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2025-04-26 16:04:03,898 INFO L274 PluginConnector]: BuchiAutomizer initialized [2025-04-26 16:04:03,898 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:04:03,898 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.04 04:04:02" (1/3) ... [2025-04-26 16:04:03,899 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f3c583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:04:03, skipping insertion in model container [2025-04-26 16:04:03,899 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:04:03,899 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.04 04:04:02" (2/3) ... [2025-04-26 16:04:03,899 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5f3c583a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.04 04:04:03, skipping insertion in model container [2025-04-26 16:04:03,899 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2025-04-26 16:04:03,899 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.04 04:04:03" (3/3) ... [2025-04-26 16:04:03,901 INFO L376 chiAutomizerObserver]: Analyzing ICFG bounded_buffer.i [2025-04-26 16:04:04,039 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-04-26 16:04:04,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 474 transitions, 968 flow [2025-04-26 16:04:04,289 INFO L116 PetriNetUnfolderBase]: 100/1005 cut-off events. [2025-04-26 16:04:04,292 INFO L117 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-04-26 16:04:04,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 1005 events. 100/1005 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5960 event pairs, 0 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 532. Up to 16 conditions per place. [2025-04-26 16:04:04,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 474 transitions, 968 flow [2025-04-26 16:04:04,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 474 transitions, 968 flow [2025-04-26 16:04:04,343 INFO L84 lAbstractionProvider]: Constructed initial Petri net abstraction that has has 431 places, 474 transitions, 968 flow [2025-04-26 16:04:04,354 INFO L306 stractBuchiCegarLoop]: Interprodecural is true [2025-04-26 16:04:04,354 INFO L307 stractBuchiCegarLoop]: Hoare is None [2025-04-26 16:04:04,354 INFO L308 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2025-04-26 16:04:04,354 INFO L309 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2025-04-26 16:04:04,354 INFO L310 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2025-04-26 16:04:04,354 INFO L311 stractBuchiCegarLoop]: Difference is false [2025-04-26 16:04:04,354 INFO L312 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2025-04-26 16:04:04,354 INFO L316 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2025-04-26 16:04:04,355 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2025-04-26 16:05:09,290 INFO L131 ngComponentsAnalysis]: Automaton has 3175 accepting balls. 1607785 [2025-04-26 16:05:09,291 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2025-04-26 16:05:09,291 INFO L120 BuchiIsEmpty]: Starting construction of run [2025-04-26 16:05:09,297 INFO L148 hiAutomatonCegarLoop]: Counterexample stem 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] [2025-04-26 16:05:09,297 INFO L149 hiAutomatonCegarLoop]: Counterexample loop 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] [2025-04-26 16:05:09,297 INFO L340 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2025-04-26 16:05:09,298 INFO L73 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 1622865 states, but on-demand construction may add more states