./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-complex/bounded_buffer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version e2fb8bed 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-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6780d9b269575eab8bb01b5a192a21fa771f6fcc4c495cab5abe1df10d7681d5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 21:53:07,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:53:07,808 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-08 21:53:07,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:53:07,813 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:53:07,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:53:07,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:53:07,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:53:07,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:53:07,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:53:07,838 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:53:07,839 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:53:07,839 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:53:07,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:53:07,839 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:53:07,839 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:53:07,840 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:53:07,840 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:53:07,841 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:53:07,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:53:07,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:53:07,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:53:07,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:53:07,841 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:53:07,841 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:53:07,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:53:07,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:53:07,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:53:07,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:53:07,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:53:07,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:53:07,842 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 ! data-race) ) 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 [2025-03-08 21:53:08,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:53:08,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:53:08,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:53:08,114 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:53:08,114 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:53:08,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-08 21:53:09,323 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b63a4f1b0/7d4f888dc0f349fca810ba3bfbc7ce4b/FLAG48f8c0e87 [2025-03-08 21:53:09,677 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:53:09,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/bounded_buffer.i [2025-03-08 21:53:09,699 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b63a4f1b0/7d4f888dc0f349fca810ba3bfbc7ce4b/FLAG48f8c0e87 [2025-03-08 21:53:09,907 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b63a4f1b0/7d4f888dc0f349fca810ba3bfbc7ce4b [2025-03-08 21:53:09,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:53:09,910 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:53:09,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:53:09,912 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:53:09,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:53:09,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:53:09" (1/1) ... [2025-03-08 21:53:09,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bac3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:09, skipping insertion in model container [2025-03-08 21:53:09,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:53:09" (1/1) ... [2025-03-08 21:53:09,954 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:53:10,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:53:10,439 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:53:10,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:53:10,596 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:53:10,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10 WrapperNode [2025-03-08 21:53:10,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:53:10,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:53:10,598 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:53:10,598 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:53:10,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,638 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,675 INFO L138 Inliner]: procedures = 429, calls = 135, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 877 [2025-03-08 21:53:10,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:53:10,675 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:53:10,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:53:10,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:53:10,685 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,694 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,739 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,744 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,756 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,767 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:53:10,769 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:53:10,770 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:53:10,770 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:53:10,770 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (1/1) ... [2025-03-08 21:53:10,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:53:10,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:53:10,796 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) [2025-03-08 21:53:10,799 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 [2025-03-08 21:53:10,816 INFO L130 BoogieDeclarations]: Found specification of procedure producer_routine [2025-03-08 21:53:10,817 INFO L138 BoogieDeclarations]: Found implementation of procedure producer_routine [2025-03-08 21:53:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:53:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-08 21:53:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-08 21:53:10,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-08 21:53:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:53:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-03-08 21:53:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:53:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:53:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 21:53:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-03-08 21:53:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure consumer_routine [2025-03-08 21:53:10,818 INFO L138 BoogieDeclarations]: Found implementation of procedure consumer_routine [2025-03-08 21:53:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-08 21:53:10,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-08 21:53:10,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-08 21:53:10,820 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 21:53:10,961 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:53:10,962 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:53:11,391 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646: havoc ~#temp~1#1.base, ~#temp~1#1.offset; [2025-03-08 21:53:11,391 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1646-1: SUMMARY for call ULTIMATE.dealloc(~#temp~1#1.base, ~#temp~1#1.offset); srcloc: null [2025-03-08 21:53:12,050 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663: havoc main_~#producers~0#1.base, main_~#producers~0#1.offset; [2025-03-08 21:53:12,050 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1663-1: SUMMARY for call ULTIMATE.dealloc(main_~#producers~0#1.base, main_~#producers~0#1.offset); srcloc: null [2025-03-08 21:53:12,050 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664: havoc main_~#consumers~0#1.base, main_~#consumers~0#1.offset; [2025-03-08 21:53:12,050 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1664-1: SUMMARY for call ULTIMATE.dealloc(main_~#consumers~0#1.base, main_~#consumers~0#1.offset); srcloc: null [2025-03-08 21:53:12,050 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666: havoc main_~#buffer~0#1.base, main_~#buffer~0#1.offset; [2025-03-08 21:53:12,050 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L1666-1: SUMMARY for call ULTIMATE.dealloc(main_~#buffer~0#1.base, main_~#buffer~0#1.offset); srcloc: null [2025-03-08 21:53:12,051 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 21:53:12,052 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:53:12,087 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:53:12,090 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 21:53:12,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:53:12 BoogieIcfgContainer [2025-03-08 21:53:12,091 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:53:12,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:53:12,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:53:12,100 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:53:12,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:53:09" (1/3) ... [2025-03-08 21:53:12,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208f6e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:53:12, skipping insertion in model container [2025-03-08 21:53:12,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:53:10" (2/3) ... [2025-03-08 21:53:12,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@208f6e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:53:12, skipping insertion in model container [2025-03-08 21:53:12,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:53:12" (3/3) ... [2025-03-08 21:53:12,101 INFO L128 eAbstractionObserver]: Analyzing ICFG bounded_buffer.i [2025-03-08 21:53:12,116 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:53:12,117 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bounded_buffer.i that has 3 procedures, 930 locations, 1 initial locations, 13 loop locations, and 77 error locations. [2025-03-08 21:53:12,117 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 21:53:12,318 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-08 21:53:12,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 936 places, 977 transitions, 1974 flow [2025-03-08 21:53:13,013 INFO L124 PetriNetUnfolderBase]: 97/2068 cut-off events. [2025-03-08 21:53:13,014 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2025-03-08 21:53:13,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 2068 events. 97/2068 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12812 event pairs, 0 based on Foata normal form. 0/1800 useless extension candidates. Maximal degree in co-relation 1083. Up to 16 conditions per place. [2025-03-08 21:53:13,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 936 places, 977 transitions, 1974 flow [2025-03-08 21:53:13,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 936 places, 977 transitions, 1974 flow [2025-03-08 21:53:13,100 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:53:13,108 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;@7904817a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:53:13,108 INFO L334 AbstractCegarLoop]: Starting to check reachability of 121 error locations. [2025-03-08 21:53:13,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:53:13,115 INFO L124 PetriNetUnfolderBase]: 0/34 cut-off events. [2025-03-08 21:53:13,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:53:13,116 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:53:13,116 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:53:13,116 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONDATA_RACE === [consumer_routineErr21ASSERT_VIOLATIONDATA_RACE, consumer_routineErr20ASSERT_VIOLATIONDATA_RACE, consumer_routineErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (and 118 more)] === [2025-03-08 21:53:13,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:53:13,120 INFO L85 PathProgramCache]: Analyzing trace with hash -813828101, now seen corresponding path program 1 times [2025-03-08 21:53:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:53:13,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53718197] [2025-03-08 21:53:13,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:53:13,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:53:13,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 21:53:13,245 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 21:53:13,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:53:13,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:53:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:53:13,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:53:13,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53718197] [2025-03-08 21:53:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53718197] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:53:13,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:53:13,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:53:13,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257505968] [2025-03-08 21:53:13,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:53:13,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:53:13,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:53:13,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:53:13,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:53:15,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 680 out of 977 [2025-03-08 21:53:15,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 936 places, 977 transitions, 1974 flow. Second operand has 6 states, 6 states have (on average 681.3333333333334) internal successors, (4088), 6 states have internal predecessors, (4088), 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) [2025-03-08 21:53:15,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:53:15,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 680 of 977 [2025-03-08 21:53:15,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand