./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-complex/bounded_buffer.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:36:20,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:36:20,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:36:20,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:36:20,528 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:36:20,549 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:36:20,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:36:20,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:36:20,550 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:36:20,551 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:36:20,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:36:20,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:36:20,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:36:20,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:36:20,551 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:36:20,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:36:20,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:36:20,552 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:36:20,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:36:20,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:36:20,553 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer 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 [2025-03-13 21:36:20,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:36:20,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:36:20,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:36:20,787 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:36:20,787 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:36:20,788 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-13 21:36:21,964 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df6672dd4/210a203e164542fd97e0aed2a4c09bc3/FLAG628465cb3 [2025-03-13 21:36:22,316 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:36:22,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-13 21:36:22,341 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df6672dd4/210a203e164542fd97e0aed2a4c09bc3/FLAG628465cb3 [2025-03-13 21:36:22,357 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df6672dd4/210a203e164542fd97e0aed2a4c09bc3 [2025-03-13 21:36:22,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:36:22,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:36:22,362 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:36:22,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:36:22,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:36:22,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:22,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2f5d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22, skipping insertion in model container [2025-03-13 21:36:22,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:22,407 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:36:22,797 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2025-03-13 21:36:22,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:36:22,842 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:36:22,904 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i[70002,70015] [2025-03-13 21:36:22,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:36:22,989 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:36:22,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22 WrapperNode [2025-03-13 21:36:22,990 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:36:22,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:36:22,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:36:22,992 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:36:22,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,023 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,060 INFO L138 Inliner]: procedures = 429, calls = 134, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 450 [2025-03-13 21:36:23,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:36:23,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:36:23,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:36:23,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:36:23,071 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,075 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,100 INFO L175 MemorySlicer]: Split 78 memory accesses to 6 slices as follows [2, 5, 2, 5, 6, 58]. 74 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 26 writes are split as follows [0, 3, 1, 3, 2, 17]. [2025-03-13 21:36:23,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,120 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,121 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,125 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,129 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:36:23,138 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:36:23,138 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:36:23,138 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:36:23,139 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (1/1) ... [2025-03-13 21:36:23,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:36:23,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:36:23,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-13 21:36:23,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-03-13 21:36:23,189 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-03-13 21:36:23,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:36:23,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-03-13 21:36:23,190 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-13 21:36:23,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-13 21:36:23,191 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:36:23,338 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:36:23,339 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:36:23,631 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646: havoc ~#temp~1#1.base, ~#temp~1#1.offset; [2025-03-13 21:36:23,633 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646-1: SUMMARY for call ULTIMATE.dealloc(~#temp~1#1.base, ~#temp~1#1.offset); srcloc: null [2025-03-13 21:36:23,806 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663: havoc main_~#producers~0#1.base, main_~#producers~0#1.offset; [2025-03-13 21:36:23,806 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663-1: SUMMARY for call ULTIMATE.dealloc(main_~#producers~0#1.base, main_~#producers~0#1.offset); srcloc: null [2025-03-13 21:36:23,806 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664: havoc main_~#consumers~0#1.base, main_~#consumers~0#1.offset; [2025-03-13 21:36:23,806 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664-1: SUMMARY for call ULTIMATE.dealloc(main_~#consumers~0#1.base, main_~#consumers~0#1.offset); srcloc: null [2025-03-13 21:36:23,806 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666: havoc main_~#buffer~0#1.base, main_~#buffer~0#1.offset; [2025-03-13 21:36:23,807 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666-1: SUMMARY for call ULTIMATE.dealloc(main_~#buffer~0#1.base, main_~#buffer~0#1.offset); srcloc: null [2025-03-13 21:36:23,807 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:36:23,808 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:36:23,808 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:36:24,152 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:36:24,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:36:24 BoogieIcfgContainer [2025-03-13 21:36:24,154 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:36:24,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:36:24,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:36:24,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:36:24,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:36:22" (1/3) ... [2025-03-13 21:36:24,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7ee776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:36:24, skipping insertion in model container [2025-03-13 21:36:24,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:36:22" (2/3) ... [2025-03-13 21:36:24,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7ee776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:36:24, skipping insertion in model container [2025-03-13 21:36:24,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:36:24" (3/3) ... [2025-03-13 21:36:24,160 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-03-13 21:36:24,172 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:36:24,174 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bounded_buffer.i that has 3 procedures, 81 locations, 1 initial locations, 13 loop locations, and 3 error locations. [2025-03-13 21:36:24,174 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:36:24,256 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-13 21:36:24,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 114 transitions, 248 flow [2025-03-13 21:36:24,368 INFO L124 PetriNetUnfolderBase]: 76/264 cut-off events. [2025-03-13 21:36:24,374 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-13 21:36:24,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 264 events. 76/264 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1182 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 146. Up to 16 conditions per place. [2025-03-13 21:36:24,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 114 transitions, 248 flow [2025-03-13 21:36:24,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 114 transitions, 248 flow [2025-03-13 21:36:24,392 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:36:24,404 INFO L333 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, 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;@4d661722, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:36:24,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-03-13 21:36:24,424 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:36:24,424 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2025-03-13 21:36:24,424 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:36:24,424 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:36:24,425 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-13 21:36:24,426 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2025-03-13 21:36:24,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:36:24,432 INFO L85 PathProgramCache]: Analyzing trace with hash 132389558, now seen corresponding path program 1 times [2025-03-13 21:36:24,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:36:24,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272038888] [2025-03-13 21:36:24,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:36:24,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:36:24,521 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-13 21:36:24,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-13 21:36:24,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:36:24,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:36:24,604 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 21:36:24,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-13 21:36:24,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-13 21:36:24,645 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:36:24,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 21:36:24,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 21:36:24,673 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 21:36:24,674 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2025-03-13 21:36:24,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (6 of 8 remaining) [2025-03-13 21:36:24,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2025-03-13 21:36:24,676 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2025-03-13 21:36:24,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (3 of 8 remaining) [2025-03-13 21:36:24,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (2 of 8 remaining) [2025-03-13 21:36:24,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2025-03-13 21:36:24,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 8 remaining) [2025-03-13 21:36:24,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:36:24,678 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-13 21:36:24,682 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 21:36:24,683 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-13 21:36:24,788 INFO L143 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2025-03-13 21:36:24,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 186 transitions, 416 flow [2025-03-13 21:36:24,912 INFO L124 PetriNetUnfolderBase]: 293/919 cut-off events. [2025-03-13 21:36:24,913 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2025-03-13 21:36:24,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 919 events. 293/919 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5462 event pairs, 2 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 533. Up to 64 conditions per place. [2025-03-13 21:36:24,924 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 186 transitions, 416 flow [2025-03-13 21:36:24,935 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 186 transitions, 416 flow [2025-03-13 21:36:24,938 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:36:24,939 INFO L333 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, 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;@4d661722, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:36:24,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-03-13 21:36:24,951 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:36:24,951 INFO L124 PetriNetUnfolderBase]: 7/59 cut-off events. [2025-03-13 21:36:24,952 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-03-13 21:36:24,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:36:24,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:36:24,953 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting producer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE, consumer_routineErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-13 21:36:24,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:36:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash 194381666, now seen corresponding path program 1 times [2025-03-13 21:36:24,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:36:24,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457243116] [2025-03-13 21:36:24,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:36:24,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:36:25,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-13 21:36:25,058 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-13 21:36:25,058 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:36:25,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:36:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:36:26,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:36:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457243116] [2025-03-13 21:36:26,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457243116] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:36:26,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:36:26,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:36:26,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804870299] [2025-03-13 21:36:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:36:26,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:36:26,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:36:26,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:36:26,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:36:26,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 186 [2025-03-13 21:36:26,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 186 transitions, 416 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 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) [2025-03-13 21:36:26,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:36:26,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 186 [2025-03-13 21:36:26,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand