./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.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 7f7f7b6ea5abe354543dc816b244a5041021350ff4076c6fd52a8208b97eac31 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:04:18,848 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:04:18,938 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:04:18,945 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:04:18,947 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:04:18,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:04:18,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:04:18,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:04:18,992 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:04:18,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:04:18,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:04:18,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:04:18,995 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:04:18,997 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:04:19,000 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:04:19,000 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:04:19,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:04:19,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:04:19,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:04:19,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:04:19,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:04:19,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:04:19,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:04:19,003 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:04:19,003 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:04:19,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:04:19,006 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:04:19,006 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:04:19,006 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:04:19,006 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:04:19,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:04:19,007 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:04:19,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:04:19,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:04:19,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:04:19,008 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:04:19,008 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:04:19,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:04:19,009 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:04:19,009 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:04:19,010 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:04:19,010 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:04:19,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f7f7b6ea5abe354543dc816b244a5041021350ff4076c6fd52a8208b97eac31 [2024-11-12 08:04:19,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:04:19,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:04:19,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:04:19,295 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:04:19,295 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:04:19,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2024-11-12 08:04:20,668 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:04:20,915 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:04:20,916 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i [2024-11-12 08:04:20,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c05c8fb/2c31a68ed83d4655be5052c5c5ca3d65/FLAG802d9a048 [2024-11-12 08:04:20,946 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55c05c8fb/2c31a68ed83d4655be5052c5c5ca3d65 [2024-11-12 08:04:20,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:04:20,949 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:04:20,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:04:20,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:04:20,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:04:20,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:04:20" (1/1) ... [2024-11-12 08:04:20,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddd1ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:20, skipping insertion in model container [2024-11-12 08:04:20,958 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:04:20" (1/1) ... [2024-11-12 08:04:21,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:04:21,346 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i[31306,31319] [2024-11-12 08:04:21,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:04:21,437 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:04:21,516 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-2.i[31306,31319] [2024-11-12 08:04:21,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:04:21,612 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:04:21,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21 WrapperNode [2024-11-12 08:04:21,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:04:21,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:04:21,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:04:21,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:04:21,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,756 INFO L138 Inliner]: procedures = 179, calls = 46, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 2108 [2024-11-12 08:04:21,757 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:04:21,758 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:04:21,758 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:04:21,758 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:04:21,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,838 INFO L175 MemorySlicer]: Split 24 memory accesses to 4 slices as follows [2, 12, 6, 4]. 50 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 2, 1, 1]. The 9 writes are split as follows [0, 5, 2, 2]. [2024-11-12 08:04:21,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,883 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,910 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:04:21,950 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:04:21,950 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:04:21,950 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:04:21,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:04:21" (1/1) ... [2024-11-12 08:04:21,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:04:21,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:04:21,990 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) [2024-11-12 08:04:21,994 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 [2024-11-12 08:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 08:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 08:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 08:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 08:04:22,037 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-12 08:04:22,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 08:04:22,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 08:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 08:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-12 08:04:22,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:04:22,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:04:22,041 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:04:22,171 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:04:22,178 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:04:23,883 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:04:23,884 INFO L287 CfgBuilder]: Performing block encoding