./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread/singleton-b.i --full-output --witness-type violation_witness --validate ../results-verified/LOGDIR/SV-COMP24_no-data-race/singleton-b.yml/witness.graphml --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 194c01fd Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../sv-benchmarks/c/pthread/singleton-b.i ../results-verified/LOGDIR/SV-COMP24_no-data-race/singleton-b.yml/witness.graphml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --- Real Ultimate output --- This is Ultimate 0.2.5-dev-194c01f-m [2024-10-29 15:19:10,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-29 15:19:10,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-29 15:19:10,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-29 15:19:10,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-29 15:19:10,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-29 15:19:10,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-29 15:19:10,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-29 15:19:10,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-29 15:19:10,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-29 15:19:10,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-29 15:19:10,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-29 15:19:10,761 INFO L153 SettingsManager]: * Use SBE=true [2024-10-29 15:19:10,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-29 15:19:10,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-29 15:19:10,762 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-29 15:19:10,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-29 15:19:10,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-29 15:19:10,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-29 15:19:10,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-29 15:19:10,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-29 15:19:10,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-29 15:19:10,765 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-29 15:19:10,765 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-29 15:19:10,765 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-29 15:19:10,765 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-29 15:19:10,766 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-29 15:19:10,766 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-29 15:19:10,766 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-29 15:19:10,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-29 15:19:10,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-29 15:19:10,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-29 15:19:10,767 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-29 15:19:10,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-29 15:19:10,768 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-29 15:19:10,768 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-29 15:19:10,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-29 15:19:10,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-29 15:19:10,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-29 15:19:10,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-29 15:19:10,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-29 15:19:10,771 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None [2024-10-29 15:19:11,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-29 15:19:11,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-29 15:19:11,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-29 15:19:11,053 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-10-29 15:19:11,054 INFO L274 PluginConnector]: Witness Parser initialized [2024-10-29 15:19:11,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../results-verified/LOGDIR/SV-COMP24_no-data-race/singleton-b.yml/witness.graphml [2024-10-29 15:19:11,137 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-29 15:19:11,138 INFO L274 PluginConnector]: CDTParser initialized [2024-10-29 15:19:11,138 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/singleton-b.i [2024-10-29 15:19:12,633 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-29 15:19:12,886 INFO L384 CDTParser]: Found 1 translation units. [2024-10-29 15:19:12,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/singleton-b.i [2024-10-29 15:19:12,916 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e9f2515/44cf6016bf2c44f8bd701cb6a5e2e35f/FLAG52f6e5e6a [2024-10-29 15:19:12,935 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81e9f2515/44cf6016bf2c44f8bd701cb6a5e2e35f [2024-10-29 15:19:12,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-29 15:19:12,937 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-10-29 15:19:12,938 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-29 15:19:12,938 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-29 15:19:12,943 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-29 15:19:12,943 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.graphml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 29.10 03:19:11" (1/2) ... [2024-10-29 15:19:12,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1669db02 and model type witness.graphml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 29.10 03:19:12, skipping insertion in model container [2024-10-29 15:19:12,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.graphml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 29.10 03:19:11" (1/2) ... [2024-10-29 15:19:12,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c6ae91a and model type witness.graphml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 29.10 03:19:12, skipping insertion in model container [2024-10-29 15:19:12,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:12" (2/2) ... [2024-10-29 15:19:12,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1669db02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:12, skipping insertion in model container [2024-10-29 15:19:12,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:19:12" (2/2) ... [2024-10-29 15:19:13,017 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-29 15:19:13,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-29 15:19:13,498 INFO L200 MainTranslator]: Completed pre-run [2024-10-29 15:19:13,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-29 15:19:13,606 INFO L204 MainTranslator]: Completed translation [2024-10-29 15:19:13,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13 WrapperNode [2024-10-29 15:19:13,606 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-29 15:19:13,607 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-29 15:19:13,608 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-29 15:19:13,608 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-29 15:19:13,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,661 INFO L138 Inliner]: procedures = 322, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 34 [2024-10-29 15:19:13,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-29 15:19:13,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-29 15:19:13,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-29 15:19:13,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-29 15:19:13,672 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-29 15:19:13,694 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-29 15:19:13,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-29 15:19:13,695 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-29 15:19:13,695 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (1/1) ... [2024-10-29 15:19:13,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-29 15:19:13,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-29 15:19:13,746 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) [2024-10-29 15:19:13,753 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 [2024-10-29 15:19:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-29 15:19:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2024-10-29 15:19:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2024-10-29 15:19:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-29 15:19:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-29 15:19:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-29 15:19:13,799 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-29 15:19:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-29 15:19:13,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-29 15:19:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-29 15:19:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-29 15:19:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-29 15:19:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-29 15:19:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-29 15:19:13,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-29 15:19:13,803 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-29 15:19:13,962 INFO L238 CfgBuilder]: Building ICFG [2024-10-29 15:19:13,965 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-29 15:19:14,172 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-29 15:19:14,176 INFO L287 CfgBuilder]: Performing block encoding [2024-10-29 15:19:14,198 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-29 15:19:14,201 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-29 15:19:14,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:14 BoogieIcfgContainer [2024-10-29 15:19:14,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-29 15:19:14,205 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-29 15:19:14,205 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-29 15:19:14,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-29 15:19:14,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.graphml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 29.10 03:19:11" (1/4) ... [2024-10-29 15:19:14,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41020e22 and model type witness.graphml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 29.10 03:19:14, skipping insertion in model container [2024-10-29 15:19:14,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:19:12" (2/4) ... [2024-10-29 15:19:14,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41020e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:14, skipping insertion in model container [2024-10-29 15:19:14,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:19:13" (3/4) ... [2024-10-29 15:19:14,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41020e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:19:14, skipping insertion in model container [2024-10-29 15:19:14,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:19:14" (4/4) ... [2024-10-29 15:19:14,215 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton-b.i [2024-10-29 15:19:14,215 WARN L117 eAbstractionObserver]: Found a witness automaton. I will only consider traces that are accepted by the witness automaton [2024-10-29 15:19:14,240 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-29 15:19:14,240 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-29 15:19:14,240 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-29 15:19:14,413 INFO L143 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2024-10-29 15:19:14,463 WARN L158 CegarLoopFactory]: Violation witness validation is only supported for CEGAR loops based on FINITE_AUTOMATA. Ignoring concurrency settiong PETRI_NET and switching to FINITE_AUTOMATA. [2024-10-29 15:19:14,477 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 202 places, 193 transitions, 483 flow [2024-10-29 15:19:27,206 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 307188 states, 307105 states have (on average 4.940212630859152) internal successors, (1517164), 307187 states have internal predecessors, (1517164), 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) [2024-10-29 15:19:27,259 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-29 15:19:27,271 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=None, 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;@3130f20a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-29 15:19:27,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2024-10-29 15:19:27,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 307188 states, 307105 states have (on average 4.940212630859152) internal successors, (1517164), 307187 states have internal predecessors, (1517164), 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) [2024-10-29 15:19:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-29 15:19:27,884 INFO L207 NwaCegarLoop]: Found error trace [2024-10-29 15:19:27,885 INFO L215 NwaCegarLoop]: 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, 1, 1, 1, 1] [2024-10-29 15:19:27,886 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 24 more)] === [2024-10-29 15:19:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-29 15:19:27,891 INFO L85 PathProgramCache]: Analyzing trace with hash -260483121, now seen corresponding path program 1 times [2024-10-29 15:19:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-29 15:19:27,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600842063] [2024-10-29 15:19:27,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-29 15:19:27,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-29 15:19:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-29 15:19:28,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-29 15:19:28,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-29 15:19:28,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600842063] [2024-10-29 15:19:28,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600842063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-29 15:19:28,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-29 15:19:28,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-29 15:19:28,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736354175] [2024-10-29 15:19:28,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-29 15:19:28,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-29 15:19:28,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-29 15:19:28,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-29 15:19:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-29 15:19:28,993 INFO L87 Difference]: Start difference. First operand has 307188 states, 307105 states have (on average 4.940212630859152) internal successors, (1517164), 307187 states have internal predecessors, (1517164), 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) Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-10-29 15:19:37,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-29 15:19:37,387 INFO L93 Difference]: Finished difference Result 307188 states and 1517164 transitions. [2024-10-29 15:19:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-29 15:19:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 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) Word has length 30 [2024-10-29 15:19:37,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-29 15:19:42,594 INFO L225 Difference]: With dead ends: 307188 [2024-10-29 15:19:42,595 INFO L226 Difference]: Without dead ends: 307179 [2024-10-29 15:19:42,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-29 15:19:42,735 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-29 15:19:42,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 207 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-29 15:19:43,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307179 states. [2024-10-29 15:19:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307179 to 307179. [2024-10-29 15:19:58,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307179 states, 307097 states have (on average 4.940272943076618) internal successors, (1517143), 307178 states have internal predecessors, (1517143), 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) Killed by 15