./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 572f30a11eb1875d022a7591921c07965188882988e15e9eab6f0a68b203b580 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 06:32:30,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 06:32:30,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-27 06:32:30,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 06:32:30,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 06:32:30,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 06:32:30,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 06:32:30,338 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 06:32:30,338 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 06:32:30,338 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 06:32:30,339 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 06:32:30,339 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 06:32:30,339 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 06:32:30,339 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 06:32:30,339 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 06:32:30,339 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 06:32:30,339 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 06:32:30,340 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 06:32:30,341 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 06:32:30,341 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 06:32:30,341 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 06:32:30,341 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 06:32:30,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-27 06:32:30,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 06:32:30,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * Commutativity condition synthesis=NECESSARY_AND_SUFFICIENT [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-27 06:32:30,342 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-27 06:32:30,343 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-27 06:32:30,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco 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 -> 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 -> 572f30a11eb1875d022a7591921c07965188882988e15e9eab6f0a68b203b580 [2024-11-27 06:32:30,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 06:32:30,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 06:32:30,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 06:32:30,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 06:32:30,688 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 06:32:30,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/../../sv-benchmarks/c/pthread-ext/25_stack_longest-2.i [2024-11-27 06:32:33,777 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/data/549b2f1b1/4c6ed34b25d2459ea2312736f9e1bfd1/FLAGc1b2baaa7 [2024-11-27 06:32:34,146 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 06:32:34,147 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/sv-benchmarks/c/pthread-ext/25_stack_longest-2.i [2024-11-27 06:32:34,160 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/data/549b2f1b1/4c6ed34b25d2459ea2312736f9e1bfd1/FLAGc1b2baaa7 [2024-11-27 06:32:34,180 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/data/549b2f1b1/4c6ed34b25d2459ea2312736f9e1bfd1 [2024-11-27 06:32:34,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 06:32:34,185 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 06:32:34,187 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 06:32:34,187 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 06:32:34,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 06:32:34,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:34,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ccfc1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34, skipping insertion in model container [2024-11-27 06:32:34,197 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:34,244 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 06:32:34,725 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/sv-benchmarks/c/pthread-ext/25_stack_longest-2.i[31351,31364] [2024-11-27 06:32:34,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 06:32:34,827 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 06:32:34,864 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/sv-benchmarks/c/pthread-ext/25_stack_longest-2.i[31351,31364] [2024-11-27 06:32:34,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 06:32:34,924 INFO L204 MainTranslator]: Completed translation [2024-11-27 06:32:34,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34 WrapperNode [2024-11-27 06:32:34,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 06:32:34,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 06:32:34,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 06:32:34,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 06:32:34,933 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:34,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,032 INFO L138 Inliner]: procedures = 171, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 2051 [2024-11-27 06:32:35,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 06:32:35,033 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 06:32:35,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 06:32:35,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 06:32:35,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,114 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,147 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,158 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 06:32:35,159 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 06:32:35,159 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 06:32:35,159 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 06:32:35,160 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 06:32:34" (1/1) ... [2024-11-27 06:32:35,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-27 06:32:35,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/z3 [2024-11-27 06:32:35,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-27 06:32:35,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e54a287-e854-422d-8ecb-62cfb541da77/bin/ugemcutter-verify-fG3NtRWMco/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-27 06:32:35,249 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-27 06:32:35,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-27 06:32:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-27 06:32:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 06:32:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 06:32:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-27 06:32:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 06:32:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-27 06:32:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 06:32:35,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 06:32:35,255 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 06:32:35,419 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 06:32:35,421 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 06:32:37,730 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 06:32:37,730 INFO L283 CfgBuilder]: Performing block encoding