./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 16:07:13,932 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 16:07:13,976 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 16:07:13,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 16:07:13,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 16:07:14,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 16:07:14,007 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 16:07:14,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 16:07:14,008 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 16:07:14,011 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 16:07:14,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 16:07:14,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 16:07:14,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 16:07:14,013 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 16:07:14,013 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 16:07:14,013 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 16:07:14,013 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 16:07:14,014 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 16:07:14,014 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 16:07:14,014 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 16:07:14,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 16:07:14,014 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 16:07:14,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 16:07:14,015 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 16:07:14,015 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 16:07:14,015 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 16:07:14,015 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 16:07:14,015 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 16:07:14,016 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 16:07:14,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 16:07:14,017 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 16:07:14,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 16:07:14,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:07:14,017 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 16:07:14,017 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 16:07:14,018 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 16:07:14,018 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 16:07:14,018 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 16:07:14,018 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 16:07:14,018 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 16:07:14,018 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 16:07:14,019 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 16:07:14,019 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 16:07:14,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2024-01-27 16:07:14,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 16:07:14,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 16:07:14,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 16:07:14,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 16:07:14,281 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 16:07:14,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2024-01-27 16:07:15,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 16:07:15,521 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 16:07:15,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2024-01-27 16:07:15,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfad15f0c/5d109b5a707a46f48afd31005e89018b/FLAG7ab84a5ec [2024-01-27 16:07:15,540 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfad15f0c/5d109b5a707a46f48afd31005e89018b [2024-01-27 16:07:15,542 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 16:07:15,543 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 16:07:15,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 16:07:15,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 16:07:15,551 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 16:07:15,552 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:15,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521b7aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15, skipping insertion in model container [2024-01-27 16:07:15,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:15,587 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 16:07:15,809 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2024-01-27 16:07:15,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:07:15,826 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 16:07:15,872 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2024-01-27 16:07:15,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 16:07:15,907 INFO L206 MainTranslator]: Completed translation [2024-01-27 16:07:15,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15 WrapperNode [2024-01-27 16:07:15,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 16:07:15,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 16:07:15,909 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 16:07:15,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 16:07:15,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:15,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:15,964 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 62 [2024-01-27 16:07:15,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 16:07:15,965 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 16:07:15,965 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 16:07:15,965 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 16:07:15,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:15,974 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:15,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:15,998 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 2, 5, 5, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 5, 5, 0]. The 2 writes are split as follows [0, 1, 0, 0, 1]. [2024-01-27 16:07:15,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:15,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:16,003 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:16,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:16,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:16,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:16,018 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 16:07:16,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 16:07:16,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 16:07:16,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 16:07:16,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (1/1) ... [2024-01-27 16:07:16,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 16:07:16,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 16:07:16,050 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) [2024-01-27 16:07:16,060 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 [2024-01-27 16:07:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 16:07:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 16:07:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 16:07:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 16:07:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 16:07:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 16:07:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 16:07:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 16:07:16,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 16:07:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 16:07:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 16:07:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 16:07:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 16:07:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 16:07:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-27 16:07:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 16:07:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 16:07:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 16:07:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 16:07:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 16:07:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 16:07:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 16:07:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 16:07:16,102 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-27 16:07:16,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 16:07:16,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 16:07:16,104 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 16:07:16,253 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 16:07:16,255 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 16:07:16,464 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 16:07:16,465 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 16:07:16,561 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 16:07:16,561 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 16:07:16,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:07:16 BoogieIcfgContainer [2024-01-27 16:07:16,562 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 16:07:16,563 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 16:07:16,563 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 16:07:16,566 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 16:07:16,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 04:07:15" (1/3) ... [2024-01-27 16:07:16,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccf34db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:07:16, skipping insertion in model container [2024-01-27 16:07:16,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 04:07:15" (2/3) ... [2024-01-27 16:07:16,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ccf34db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 04:07:16, skipping insertion in model container [2024-01-27 16:07:16,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:07:16" (3/3) ... [2024-01-27 16:07:16,568 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2024-01-27 16:07:16,574 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 16:07:16,585 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 16:07:16,585 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 16:07:16,586 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 16:07:16,621 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 16:07:16,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 34 transitions, 82 flow [2024-01-27 16:07:16,694 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2024-01-27 16:07:16,694 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:07:16,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 32 events. 1/32 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-01-27 16:07:16,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 34 transitions, 82 flow [2024-01-27 16:07:16,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 29 transitions, 70 flow [2024-01-27 16:07:16,718 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 16:07:16,724 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@18a792ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 16:07:16,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 16:07:16,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 16:07:16,746 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-01-27 16:07:16,746 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 16:07:16,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 16:07:16,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 16:07:16,747 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 16:07:16,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 16:07:16,752 INFO L85 PathProgramCache]: Analyzing trace with hash -933147106, now seen corresponding path program 1 times [2024-01-27 16:07:16,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 16:07:16,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458293390] [2024-01-27 16:07:16,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 16:07:16,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 16:07:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:07:16,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-27 16:07:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-27 16:07:17,040 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-27 16:07:17,041 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-27 16:07:17,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-01-27 16:07:17,043 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-01-27 16:07:17,044 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-01-27 16:07:17,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 16:07:17,044 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-27 16:07:17,048 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 16:07:17,048 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 16:07:17,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 04:07:17 BasicIcfg [2024-01-27 16:07:17,074 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 16:07:17,074 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 16:07:17,074 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 16:07:17,075 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 16:07:17,075 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 04:07:16" (3/4) ... [2024-01-27 16:07:17,075 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2024-01-27 16:07:17,110 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 16:07:17,111 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 16:07:17,111 INFO L158 Benchmark]: Toolchain (without parser) took 1568.04ms. Allocated memory is still 140.5MB. Free memory was 108.1MB in the beginning and 79.1MB in the end (delta: 29.0MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2024-01-27 16:07:17,112 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 107.0MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 16:07:17,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 363.83ms. Allocated memory is still 140.5MB. Free memory was 107.7MB in the beginning and 87.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-01-27 16:07:17,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.88ms. Allocated memory is still 140.5MB. Free memory was 87.3MB in the beginning and 85.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:07:17,113 INFO L158 Benchmark]: Boogie Preprocessor took 58.06ms. Allocated memory is still 140.5MB. Free memory was 85.6MB in the beginning and 83.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 16:07:17,113 INFO L158 Benchmark]: RCFGBuilder took 538.03ms. Allocated memory is still 140.5MB. Free memory was 83.1MB in the beginning and 52.5MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-27 16:07:17,113 INFO L158 Benchmark]: TraceAbstraction took 510.59ms. Allocated memory is still 140.5MB. Free memory was 52.1MB in the beginning and 84.7MB in the end (delta: -32.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 16:07:17,113 INFO L158 Benchmark]: Witness Printer took 36.48ms. Allocated memory is still 140.5MB. Free memory was 84.7MB in the beginning and 79.1MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-27 16:07:17,115 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 107.0MB. Free memory is still 66.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 363.83ms. Allocated memory is still 140.5MB. Free memory was 107.7MB in the beginning and 87.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.88ms. Allocated memory is still 140.5MB. Free memory was 87.3MB in the beginning and 85.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.06ms. Allocated memory is still 140.5MB. Free memory was 85.6MB in the beginning and 83.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 538.03ms. Allocated memory is still 140.5MB. Free memory was 83.1MB in the beginning and 52.5MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 510.59ms. Allocated memory is still 140.5MB. Free memory was 52.1MB in the beginning and 84.7MB in the end (delta: -32.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 36.48ms. Allocated memory is still 140.5MB. Free memory was 84.7MB in the beginning and 79.1MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L697] 1 data1++ VAL [arg={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L723] 0 \read(t1) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L724] 0 \read(t2) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L707] 2 data1+=5 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L725] COND TRUE 0 data1==16 && data2==5 VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={5:0}, t2={6:0}] - UnprovableResult [Line: 722]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 56 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-27 16:07:17,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE