./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-atomic/qrcu-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 05:09:38,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 05:09:38,465 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-02-08 05:09:38,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 05:09:38,469 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 05:09:38,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 05:09:38,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 05:09:38,485 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 05:09:38,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 05:09:38,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 05:09:38,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 05:09:38,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 05:09:38,486 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 05:09:38,487 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:09:38,487 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 05:09:38,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 05:09:38,487 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-jdk21/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 -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2025-02-08 05:09:38,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 05:09:38,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 05:09:38,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 05:09:38,762 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 05:09:38,762 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 05:09:38,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2025-02-08 05:09:40,035 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d66b2929f/1746902b802146b3993c3572eca05f1a/FLAG26bdaaf6e [2025-02-08 05:09:40,343 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 05:09:40,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2025-02-08 05:09:40,368 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d66b2929f/1746902b802146b3993c3572eca05f1a/FLAG26bdaaf6e [2025-02-08 05:09:40,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/d66b2929f/1746902b802146b3993c3572eca05f1a [2025-02-08 05:09:40,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 05:09:40,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 05:09:40,611 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 05:09:40,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 05:09:40,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 05:09:40,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:09:40" (1/1) ... [2025-02-08 05:09:40,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e98a554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:40, skipping insertion in model container [2025-02-08 05:09:40,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:09:40" (1/1) ... [2025-02-08 05:09:40,651 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 05:09:40,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:09:40,945 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 05:09:40,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:09:41,029 INFO L204 MainTranslator]: Completed translation [2025-02-08 05:09:41,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41 WrapperNode [2025-02-08 05:09:41,031 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 05:09:41,031 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 05:09:41,031 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 05:09:41,032 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 05:09:41,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,073 INFO L138 Inliner]: procedures = 178, calls = 42, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 446 [2025-02-08 05:09:41,076 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 05:09:41,076 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 05:09:41,076 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 05:09:41,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 05:09:41,082 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,091 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,092 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,101 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,102 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 05:09:41,109 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 05:09:41,109 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 05:09:41,109 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 05:09:41,110 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (1/1) ... [2025-02-08 05:09:41,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:09:41,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:09:41,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 05:09:41,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 05:09:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2025-02-08 05:09:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2025-02-08 05:09:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2025-02-08 05:09:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2025-02-08 05:09:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-02-08 05:09:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-02-08 05:09:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2025-02-08 05:09:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2025-02-08 05:09:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 05:09:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 05:09:41,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 05:09:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 05:09:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-02-08 05:09:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 05:09:41,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 05:09:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 05:09:41,157 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 05:09:41,249 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 05:09:41,250 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 05:09:41,700 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-9: #race := #race[~#readerstart2~0#1.base,1 + ~#readerstart2~0#1.offset := 0]; [2025-02-08 05:09:41,701 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-10: #race := #race[~#readerstart2~0#1.base,~#readerstart2~0#1.offset := 0]; [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-11: SUMMARY for call #t~mem42#1 := read~int(~#readerstart2~0#1.base, ~#readerstart2~0#1.offset, 4); srcloc: null [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L779: #res#1.base, #res#1.offset := 0, 0; [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3: assume 0 == assume_abort_if_not_~cond#1; [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3: assume !(0 == assume_abort_if_not_~cond#1); [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-1: assume false; [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763: havoc ~#readerstart2~0#1.base, ~#readerstart2~0#1.offset; [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-1: SUMMARY for call ULTIMATE.dealloc(~#readerstart2~0#1.base, ~#readerstart2~0#1.offset); srcloc: null [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-2: havoc ~#readerstart1~0#1.base, ~#readerstart1~0#1.offset; [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-3: SUMMARY for call ULTIMATE.dealloc(~#readerstart1~0#1.base, ~#readerstart1~0#1.offset); srcloc: null [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-4: havoc ~#readerstart2~0#1.base, ~#readerstart2~0#1.offset; [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-5: SUMMARY for call ULTIMATE.dealloc(~#readerstart2~0#1.base, ~#readerstart2~0#1.offset); srcloc: null [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-6: havoc ~#readerstart1~0#1.base, ~#readerstart1~0#1.offset; [2025-02-08 05:09:41,702 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-7: SUMMARY for call ULTIMATE.dealloc(~#readerstart1~0#1.base, ~#readerstart1~0#1.offset); srcloc: null [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: __VERIFIER_atomic_check_progress2_~readerstart2#1 := __VERIFIER_atomic_check_progress2_#in~readerstart2#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717: assume 0 != __VERIFIER_atomic_check_progress2_#t~nondet17#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717: assume !(0 != __VERIFIER_atomic_check_progress2_#t~nondet17#1); [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717-1: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717-2: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717-3: assume -2147483648 <= __VERIFIER_atomic_check_progress2_#t~nondet17#1 && __VERIFIER_atomic_check_progress2_#t~nondet17#1 <= 2147483647; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717-4: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718: assume { :end_inline_assume_abort_if_not } true;havoc __VERIFIER_atomic_check_progress2_#t~short18#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-1: havoc assume_abort_if_not_#in~cond#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-2: havoc assume_abort_if_not_~cond#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-3: havoc assume_abort_if_not_~cond#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-4: assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __VERIFIER_atomic_check_progress2_#t~short18#1 then 1 else 0); [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-5: assume 0 == #race~readerprogress2~0; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-5: assume !(0 == #race~readerprogress2~0); [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-6: __VERIFIER_atomic_check_progress2_#t~short18#1 := 1 == ~readerprogress2~0; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-7: assume __VERIFIER_atomic_check_progress2_#t~short18#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-7: assume !__VERIFIER_atomic_check_progress2_#t~short18#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-8: #race~readerprogress2~0 := 0; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-9: __VERIFIER_atomic_check_progress2_#t~short18#1 := 1 == __VERIFIER_atomic_check_progress2_~readerstart2#1; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L719: assume { :end_inline_reach_error } true;assume false; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L719-1: havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L719-2: assume true;assume { :begin_inline_reach_error } true;havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L719-2: assume !true; [2025-02-08 05:09:41,703 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint qrcu_updaterFINAL: assume true; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: assume false; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: assume !false; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L16-1: assume false; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L777: havoc #t~mem41#1; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L777-1: [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L777-2: havoc __VERIFIER_atomic_check_progress1_#in~readerstart1#1;assume { :end_inline___VERIFIER_atomic_check_progress1 } true; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L777-3: havoc __VERIFIER_atomic_check_progress1_#t~nondet15#1, __VERIFIER_atomic_check_progress1_#t~short16#1, __VERIFIER_atomic_check_progress1_~readerstart1#1; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778: havoc #t~mem42#1; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-1: [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-2: havoc __VERIFIER_atomic_check_progress2_#in~readerstart2#1;assume { :end_inline___VERIFIER_atomic_check_progress2 } true; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-3: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1, __VERIFIER_atomic_check_progress2_#t~short18#1, __VERIFIER_atomic_check_progress2_~readerstart2#1; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-4: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1, __VERIFIER_atomic_check_progress2_#t~short18#1, __VERIFIER_atomic_check_progress2_~readerstart2#1; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-5: assume { :begin_inline___VERIFIER_atomic_check_progress2 } true;__VERIFIER_atomic_check_progress2_#in~readerstart2#1 := #t~mem42#1; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-6: assume ((0 == #race[~#readerstart2~0#1.base,~#readerstart2~0#1.offset] && 0 == #race[~#readerstart2~0#1.base,1 + ~#readerstart2~0#1.offset]) && 0 == #race[~#readerstart2~0#1.base,2 + ~#readerstart2~0#1.offset]) && 0 == #race[~#readerstart2~0#1.base,3 + ~#readerstart2~0#1.offset]; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-6: assume !(((0 == #race[~#readerstart2~0#1.base,~#readerstart2~0#1.offset] && 0 == #race[~#readerstart2~0#1.base,1 + ~#readerstart2~0#1.offset]) && 0 == #race[~#readerstart2~0#1.base,2 + ~#readerstart2~0#1.offset]) && 0 == #race[~#readerstart2~0#1.base,3 + ~#readerstart2~0#1.offset]); [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-7: #race := #race[~#readerstart2~0#1.base,3 + ~#readerstart2~0#1.offset := 0]; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2: assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2025-02-08 05:09:41,704 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-8: #race := #race[~#readerstart2~0#1.base,2 + ~#readerstart2~0#1.offset := 0]; [2025-02-08 05:09:41,760 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 05:09:41,760 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 05:09:42,000 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L714 is not an error location. [2025-02-08 05:09:42,004 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 05:09:42,004 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 05:09:42,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:09:42 BoogieIcfgContainer [2025-02-08 05:09:42,004 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 05:09:42,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 05:09:42,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 05:09:42,009 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 05:09:42,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 05:09:40" (1/3) ... [2025-02-08 05:09:42,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502a163d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:09:42, skipping insertion in model container [2025-02-08 05:09:42,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:41" (2/3) ... [2025-02-08 05:09:42,010 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502a163d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:09:42, skipping insertion in model container [2025-02-08 05:09:42,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:09:42" (3/3) ... [2025-02-08 05:09:42,012 INFO L128 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2025-02-08 05:09:42,026 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 05:09:42,028 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG qrcu-1.i that has 4 procedures, 279 locations, 1 initial locations, 4 loop locations, and 56 error locations. [2025-02-08 05:09:42,028 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 05:09:42,095 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.constructLocationCopy(ProcedureMultiplier.java:348) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1228) at de.uni_freiburg.informatik.ultimate.util.datastructures.BidirectionalMap.computeIfAbsent(BidirectionalMap.java:189) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.getOrConstructLocationCopy(ProcedureMultiplier.java:334) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.duplicateProcedureEdges(ProcedureMultiplier.java:221) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.(ProcedureMultiplier.java:133) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.(ProcedureMultiplier.java:114) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.duplicateProcedures(ProcedureMultiplier.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.IcfgPetrifier.(IcfgPetrifier.java:104) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.petrify(TraceAbstractionStarter.java:492) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-02-08 05:09:42,100 INFO L158 Benchmark]: Toolchain (without parser) took 1491.29ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 62.3MB in the end (delta: 49.0MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2025-02-08 05:09:42,101 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 05:09:42,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.47ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 89.2MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 05:09:42,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.64ms. Allocated memory is still 142.6MB. Free memory was 89.2MB in the beginning and 86.3MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 05:09:42,102 INFO L158 Benchmark]: Boogie Preprocessor took 32.02ms. Allocated memory is still 142.6MB. Free memory was 86.3MB in the beginning and 84.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 05:09:42,102 INFO L158 Benchmark]: IcfgBuilder took 895.53ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 76.5MB in the end (delta: 7.3MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. [2025-02-08 05:09:42,104 INFO L158 Benchmark]: TraceAbstraction took 93.62ms. Allocated memory is still 142.6MB. Free memory was 75.7MB in the beginning and 62.3MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 05:09:42,105 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 125.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.47ms. Allocated memory is still 142.6MB. Free memory was 111.2MB in the beginning and 89.2MB in the end (delta: 22.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.64ms. Allocated memory is still 142.6MB. Free memory was 89.2MB in the beginning and 86.3MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.02ms. Allocated memory is still 142.6MB. Free memory was 86.3MB in the beginning and 84.3MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 895.53ms. Allocated memory is still 142.6MB. Free memory was 83.8MB in the beginning and 76.5MB in the end (delta: 7.3MB). Peak memory consumption was 57.5MB. Max. memory is 16.1GB. * TraceAbstraction took 93.62ms. Allocated memory is still 142.6MB. Free memory was 75.7MB in the beginning and 62.3MB in the end (delta: 13.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.constructLocationCopy(ProcedureMultiplier.java:348) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2025-02-08 05:09:42,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 05:09:44,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 05:09:44,473 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf [2025-02-08 05:09:44,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 05:09:44,480 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 05:09:44,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 05:09:44,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 05:09:44,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 05:09:44,506 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 05:09:44,506 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 05:09:44,507 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 05:09:44,507 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 05:09:44,508 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 05:09:44,508 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 05:09:44,508 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 05:09:44,508 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 05:09:44,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 05:09:44,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 05:09:44,509 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 05:09:44,510 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 05:09:44,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 05:09:44,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 05:09:44,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:09:44,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 05:09:44,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 05:09:44,511 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-jdk21/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 -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2025-02-08 05:09:44,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 05:09:44,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 05:09:44,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 05:09:44,743 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 05:09:44,743 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 05:09:44,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2025-02-08 05:09:46,079 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cbd4deafe/1a207ad3394c4d85bb99c6fee7009381/FLAGd02d22069 [2025-02-08 05:09:46,313 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 05:09:46,314 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2025-02-08 05:09:46,321 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cbd4deafe/1a207ad3394c4d85bb99c6fee7009381/FLAGd02d22069 [2025-02-08 05:09:46,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/cbd4deafe/1a207ad3394c4d85bb99c6fee7009381 [2025-02-08 05:09:46,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 05:09:46,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 05:09:46,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 05:09:46,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 05:09:46,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 05:09:46,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76fe794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46, skipping insertion in model container [2025-02-08 05:09:46,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,398 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 05:09:46,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:09:46,696 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 05:09:46,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:09:46,794 INFO L204 MainTranslator]: Completed translation [2025-02-08 05:09:46,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46 WrapperNode [2025-02-08 05:09:46,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 05:09:46,795 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 05:09:46,796 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 05:09:46,796 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 05:09:46,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,847 INFO L138 Inliner]: procedures = 182, calls = 42, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 439 [2025-02-08 05:09:46,850 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 05:09:46,850 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 05:09:46,850 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 05:09:46,850 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 05:09:46,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,866 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,866 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,883 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,896 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 05:09:46,897 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 05:09:46,897 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 05:09:46,897 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 05:09:46,898 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (1/1) ... [2025-02-08 05:09:46,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:09:46,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:09:46,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 05:09:46,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-08 05:09:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2025-02-08 05:09:46,957 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2025-02-08 05:09:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2025-02-08 05:09:46,957 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2025-02-08 05:09:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-02-08 05:09:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2025-02-08 05:09:46,958 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2025-02-08 05:09:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 05:09:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 05:09:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 05:09:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 05:09:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-02-08 05:09:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2025-02-08 05:09:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2025-02-08 05:09:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 05:09:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 05:09:46,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 05:09:46,960 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 05:09:47,099 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 05:09:47,100 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 05:09:47,623 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-9: #race := #race[~#readerstart2~0#1.base,~bvadd~32(1bv32, ~#readerstart2~0#1.offset) := 0bv1]; [2025-02-08 05:09:47,626 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-10: #race := #race[~#readerstart2~0#1.base,~#readerstart2~0#1.offset := 0bv1]; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-11: SUMMARY for call #t~mem42#1 := read~intINTTYPE4(~#readerstart2~0#1.base, ~#readerstart2~0#1.offset, 4bv32); srcloc: null [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L779: #res#1.base, #res#1.offset := 0bv32, 0bv32; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3: assume 0bv32 == assume_abort_if_not_~cond#1; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3: assume !(0bv32 == assume_abort_if_not_~cond#1); [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L3-1: assume false; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763: havoc ~#readerstart2~0#1.base, ~#readerstart2~0#1.offset; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-1: SUMMARY for call ULTIMATE.dealloc(~#readerstart2~0#1.base, ~#readerstart2~0#1.offset); srcloc: null [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-2: havoc ~#readerstart1~0#1.base, ~#readerstart1~0#1.offset; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-3: SUMMARY for call ULTIMATE.dealloc(~#readerstart1~0#1.base, ~#readerstart1~0#1.offset); srcloc: null [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-4: havoc ~#readerstart2~0#1.base, ~#readerstart2~0#1.offset; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-5: SUMMARY for call ULTIMATE.dealloc(~#readerstart2~0#1.base, ~#readerstart2~0#1.offset); srcloc: null [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-6: havoc ~#readerstart1~0#1.base, ~#readerstart1~0#1.offset; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L763-7: SUMMARY for call ULTIMATE.dealloc(~#readerstart1~0#1.base, ~#readerstart1~0#1.offset); srcloc: null [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L716: __VERIFIER_atomic_check_progress2_~readerstart2#1 := __VERIFIER_atomic_check_progress2_#in~readerstart2#1; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717: assume 0bv32 != __VERIFIER_atomic_check_progress2_#t~nondet17#1; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717: assume !(0bv32 != __VERIFIER_atomic_check_progress2_#t~nondet17#1); [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717-1: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1; [2025-02-08 05:09:47,627 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717-2: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L717-3: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718: assume { :end_inline_assume_abort_if_not } true;havoc __VERIFIER_atomic_check_progress2_#t~short18#1; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-1: havoc assume_abort_if_not_#in~cond#1; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-2: havoc assume_abort_if_not_~cond#1; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-3: havoc assume_abort_if_not_~cond#1; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-4: assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __VERIFIER_atomic_check_progress2_#t~short18#1 then 1bv32 else 0bv32); [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-5: assume 0bv1 == #race~readerprogress2~0; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-5: assume !(0bv1 == #race~readerprogress2~0); [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-6: __VERIFIER_atomic_check_progress2_#t~short18#1 := 1bv32 == ~readerprogress2~0; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-7: assume __VERIFIER_atomic_check_progress2_#t~short18#1; [2025-02-08 05:09:47,628 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-7: assume !__VERIFIER_atomic_check_progress2_#t~short18#1; [2025-02-08 05:09:47,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-8: #race~readerprogress2~0 := 0bv1; [2025-02-08 05:09:47,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L718-9: __VERIFIER_atomic_check_progress2_#t~short18#1 := 1bv32 == __VERIFIER_atomic_check_progress2_~readerstart2#1; [2025-02-08 05:09:47,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L719: assume { :end_inline_reach_error } true;assume false; [2025-02-08 05:09:47,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L719-1: havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 05:09:47,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L719-2: assume true;assume { :begin_inline_reach_error } true;havoc reach_error_#t~nondet0#1.base, reach_error_#t~nondet0#1.offset; [2025-02-08 05:09:47,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L719-2: assume !true; [2025-02-08 05:09:47,629 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint qrcu_updaterFINAL: assume true; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: assume false; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: assume !false; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L16-1: assume false; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L777: havoc #t~mem41#1; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L777-1: [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L777-2: havoc __VERIFIER_atomic_check_progress1_#in~readerstart1#1;assume { :end_inline___VERIFIER_atomic_check_progress1 } true; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L777-3: havoc __VERIFIER_atomic_check_progress1_#t~nondet15#1, __VERIFIER_atomic_check_progress1_#t~short16#1, __VERIFIER_atomic_check_progress1_~readerstart1#1; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778: havoc #t~mem42#1; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-1: [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-2: havoc __VERIFIER_atomic_check_progress2_#in~readerstart2#1;assume { :end_inline___VERIFIER_atomic_check_progress2 } true; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-3: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1, __VERIFIER_atomic_check_progress2_#t~short18#1, __VERIFIER_atomic_check_progress2_~readerstart2#1; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-4: havoc __VERIFIER_atomic_check_progress2_#t~nondet17#1, __VERIFIER_atomic_check_progress2_#t~short18#1, __VERIFIER_atomic_check_progress2_~readerstart2#1; [2025-02-08 05:09:47,630 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-5: assume { :begin_inline___VERIFIER_atomic_check_progress2 } true;__VERIFIER_atomic_check_progress2_#in~readerstart2#1 := #t~mem42#1; [2025-02-08 05:09:47,631 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-6: assume ((0bv1 == #race[~#readerstart2~0#1.base,~#readerstart2~0#1.offset] && 0bv1 == #race[~#readerstart2~0#1.base,~bvadd~32(1bv32, ~#readerstart2~0#1.offset)]) && 0bv1 == #race[~#readerstart2~0#1.base,~bvadd~32(2bv32, ~#readerstart2~0#1.offset)]) && 0bv1 == #race[~#readerstart2~0#1.base,~bvadd~32(3bv32, ~#readerstart2~0#1.offset)]; [2025-02-08 05:09:47,631 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-6: assume !(((0bv1 == #race[~#readerstart2~0#1.base,~#readerstart2~0#1.offset] && 0bv1 == #race[~#readerstart2~0#1.base,~bvadd~32(1bv32, ~#readerstart2~0#1.offset)]) && 0bv1 == #race[~#readerstart2~0#1.base,~bvadd~32(2bv32, ~#readerstart2~0#1.offset)]) && 0bv1 == #race[~#readerstart2~0#1.base,~bvadd~32(3bv32, ~#readerstart2~0#1.offset)]); [2025-02-08 05:09:47,631 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-7: #race := #race[~#readerstart2~0#1.base,~bvadd~32(3bv32, ~#readerstart2~0#1.offset) := 0bv1]; [2025-02-08 05:09:47,631 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L2: assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2025-02-08 05:09:47,631 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L778-8: #race := #race[~#readerstart2~0#1.base,~bvadd~32(2bv32, ~#readerstart2~0#1.offset) := 0bv1]; [2025-02-08 05:09:47,663 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 05:09:47,663 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 05:09:47,913 WARN L149 AtomicBlockAnalyzer]: Unexpected successor node of atomic block begin: L714 is not an error location. [2025-02-08 05:09:47,913 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 05:09:47,913 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 05:09:47,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:09:47 BoogieIcfgContainer [2025-02-08 05:09:47,915 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 05:09:47,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 05:09:47,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 05:09:47,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 05:09:47,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 05:09:46" (1/3) ... [2025-02-08 05:09:47,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c84d29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:09:47, skipping insertion in model container [2025-02-08 05:09:47,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:09:46" (2/3) ... [2025-02-08 05:09:47,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c84d29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:09:47, skipping insertion in model container [2025-02-08 05:09:47,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:09:47" (3/3) ... [2025-02-08 05:09:47,922 INFO L128 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2025-02-08 05:09:47,934 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 05:09:47,935 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG qrcu-1.i that has 4 procedures, 274 locations, 1 initial locations, 4 loop locations, and 56 error locations. [2025-02-08 05:09:47,936 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 05:09:48,002 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.constructLocationCopy(ProcedureMultiplier.java:348) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1228) at de.uni_freiburg.informatik.ultimate.util.datastructures.BidirectionalMap.computeIfAbsent(BidirectionalMap.java:189) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.getOrConstructLocationCopy(ProcedureMultiplier.java:334) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.duplicateProcedureEdges(ProcedureMultiplier.java:221) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.(ProcedureMultiplier.java:133) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.(ProcedureMultiplier.java:114) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.duplicateProcedures(ProcedureMultiplier.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.IcfgPetrifier.(IcfgPetrifier.java:104) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.petrify(TraceAbstractionStarter.java:492) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-02-08 05:09:48,007 INFO L158 Benchmark]: Toolchain (without parser) took 1658.51ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 31.2MB in the end (delta: 27.2MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2025-02-08 05:09:48,007 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 35.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 05:09:48,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.80ms. Allocated memory is still 83.9MB. Free memory was 58.0MB in the beginning and 35.1MB in the end (delta: 23.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-08 05:09:48,007 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.74ms. Allocated memory is still 83.9MB. Free memory was 35.1MB in the beginning and 31.8MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 05:09:48,008 INFO L158 Benchmark]: Boogie Preprocessor took 46.22ms. Allocated memory is still 83.9MB. Free memory was 31.8MB in the beginning and 29.4MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 05:09:48,008 INFO L158 Benchmark]: IcfgBuilder took 1018.06ms. Allocated memory is still 83.9MB. Free memory was 29.4MB in the beginning and 49.6MB in the end (delta: -20.2MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. [2025-02-08 05:09:48,008 INFO L158 Benchmark]: TraceAbstraction took 88.96ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 31.2MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 05:09:48,009 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 83.9MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 35.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 444.80ms. Allocated memory is still 83.9MB. Free memory was 58.0MB in the beginning and 35.1MB in the end (delta: 23.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.74ms. Allocated memory is still 83.9MB. Free memory was 35.1MB in the beginning and 31.8MB in the end (delta: 3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.22ms. Allocated memory is still 83.9MB. Free memory was 31.8MB in the beginning and 29.4MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 1018.06ms. Allocated memory is still 83.9MB. Free memory was 29.4MB in the beginning and 49.6MB in the end (delta: -20.2MB). Peak memory consumption was 30.3MB. Max. memory is 16.1GB. * TraceAbstraction took 88.96ms. Allocated memory is still 83.9MB. Free memory was 49.1MB in the beginning and 31.2MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.ProcedureMultiplier.constructLocationCopy(ProcedureMultiplier.java:348) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2025-02-08 05:09:48,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: Cannot invoke "de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.structure.IcfgLocation.equals(Object)" because the return value of "java.util.Map.get(Object)" is null