./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc 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-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3efee66e785ce3d2f2ce0101e78a1cdae99209fb089cd0ed9c95f4aa53c186ea --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:49:10,518 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:49:10,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:49:10,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:49:10,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:49:10,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:49:10,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:49:10,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:49:10,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:49:10,601 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:49:10,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:49:10,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:49:10,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:49:10,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:49:10,604 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:49:10,604 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:49:10,605 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:49:10,605 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:49:10,605 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:49:10,605 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:49:10,605 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:49:10,606 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:49:10,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:49:10,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:49:10,607 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:49:10,607 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:49:10,607 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:49:10,607 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:49:10,608 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:49:10,608 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:49:10,608 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:49:10,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:49:10,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:49:10,609 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:49:10,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:49:10,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:49:10,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:49:10,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:49:10,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:49:10,610 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:49:10,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:49:10,611 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:49:10,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:49:10,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:49:10,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3efee66e785ce3d2f2ce0101e78a1cdae99209fb089cd0ed9c95f4aa53c186ea [2024-11-19 13:49:10,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:49:10,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:49:10,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:49:10,834 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:49:10,834 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:49:10,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2024-11-19 13:49:12,101 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:49:12,285 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:49:12,286 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2024-11-19 13:49:12,296 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da14ff52/bbef81578f6a445a89158e2a78b0bb00/FLAGe051b3754 [2024-11-19 13:49:12,310 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8da14ff52/bbef81578f6a445a89158e2a78b0bb00 [2024-11-19 13:49:12,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:49:12,313 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:49:12,314 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:49:12,314 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:49:12,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:49:12,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:12,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e08779d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12, skipping insertion in model container [2024-11-19 13:49:12,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:12,357 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:49:12,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:49:12,737 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:49:12,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:49:12,819 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:49:12,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12 WrapperNode [2024-11-19 13:49:12,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:49:12,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:49:12,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:49:12,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:49:12,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:12,848 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:12,905 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 2120 [2024-11-19 13:49:12,905 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:49:12,906 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:49:12,906 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:49:12,906 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:49:12,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:12,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:12,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:13,013 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]. [2024-11-19 13:49:13,014 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:13,014 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:13,044 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:13,068 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:13,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:13,084 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:13,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:49:13,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:49:13,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:49:13,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:49:13,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:49:12" (1/1) ... [2024-11-19 13:49:13,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:49:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:49:13,127 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) [2024-11-19 13:49:13,134 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 [2024-11-19 13:49:13,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 13:49:13,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 13:49:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 13:49:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 13:49:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 13:49:13,176 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 13:49:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:49:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:49:13,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:49:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 13:49:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 13:49:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:49:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 13:49:13,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 13:49:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:49:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:49:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:49:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 13:49:13,179 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 13:49:13,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:49:13,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:49:13,182 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:49:13,298 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:49:13,300 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:49:14,608 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:49:14,611 INFO L287 CfgBuilder]: Performing block encoding