./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/config/svcomp-Overflow-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3efee66e785ce3d2f2ce0101e78a1cdae99209fb089cd0ed9c95f4aa53c186ea --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 12:16:16,159 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 12:16:16,239 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/config/svcomp-Overflow-32bit-GemCutter_Default.epf [2024-11-08 12:16:16,248 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 12:16:16,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 12:16:16,281 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 12:16:16,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 12:16:16,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 12:16:16,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 12:16:16,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 12:16:16,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 12:16:16,285 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 12:16:16,286 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 12:16:16,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 12:16:16,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 12:16:16,289 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 12:16:16,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 12:16:16,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 12:16:16,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 12:16:16,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 12:16:16,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 12:16:16,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 12:16:16,294 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 12:16:16,294 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-08 12:16:16,295 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 12:16:16,295 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 12:16:16,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 12:16:16,295 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 12:16:16,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 12:16:16,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 12:16:16,297 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 12:16:16,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 12:16:16,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-08 12:16:16,301 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 12:16:16,301 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 12:16:16,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 12:16:16,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 12:16:16,302 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-08 12:16:16,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 12:16:16,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 12:16:16,303 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2024-11-08 12:16:16,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-08 12:16:16,304 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-08 12:16:16,304 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-08 12:16:16,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3efee66e785ce3d2f2ce0101e78a1cdae99209fb089cd0ed9c95f4aa53c186ea [2024-11-08 12:16:16,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 12:16:16,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 12:16:16,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 12:16:16,605 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 12:16:16,606 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 12:16:16,607 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/../../sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i Unable to find full path for "g++" [2024-11-08 12:16:18,739 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 12:16:19,113 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 12:16:19,113 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/sv-benchmarks/c/pthread-ext/26_stack_cas_longest-1.i [2024-11-08 12:16:19,140 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/data/9c3377224/4c56fd5424644d5dbaa2fc0104ffd354/FLAG022a45e78 [2024-11-08 12:16:19,164 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/data/9c3377224/4c56fd5424644d5dbaa2fc0104ffd354 [2024-11-08 12:16:19,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 12:16:19,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 12:16:19,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 12:16:19,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 12:16:19,182 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 12:16:19,183 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:16:19" (1/1) ... [2024-11-08 12:16:19,184 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72485e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:19, skipping insertion in model container [2024-11-08 12:16:19,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:16:19" (1/1) ... [2024-11-08 12:16:19,259 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 12:16:19,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 12:16:20,084 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 12:16:20,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 12:16:20,263 INFO L204 MainTranslator]: Completed translation [2024-11-08 12:16:20,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20 WrapperNode [2024-11-08 12:16:20,264 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 12:16:20,266 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 12:16:20,266 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 12:16:20,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 12:16:20,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,328 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,437 INFO L138 Inliner]: procedures = 179, calls = 47, calls flagged for inlining = 17, calls inlined = 20, statements flattened = 2117 [2024-11-08 12:16:20,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 12:16:20,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 12:16:20,440 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 12:16:20,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 12:16:20,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,466 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,534 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,569 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,574 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,582 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 12:16:20,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 12:16:20,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 12:16:20,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 12:16:20,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:16:20" (1/1) ... [2024-11-08 12:16:20,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-08 12:16:20,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/z3 [2024-11-08 12:16:20,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-08 12:16:20,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_597832e0-6bdf-4d51-990a-59d71ce947ab/bin/ugemcutter-verify-v6A4Riy6iL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-08 12:16:20,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-08 12:16:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-08 12:16:20,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-08 12:16:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-08 12:16:20,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 12:16:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 12:16:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 12:16:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 12:16:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-08 12:16:20,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 12:16:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 12:16:20,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 12:16:20,713 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 12:16:20,928 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 12:16:20,931 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 12:16:23,637 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 12:16:23,637 INFO L287 CfgBuilder]: Performing block encoding