./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/config/svcomp-Overflow-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F --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 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:18:18,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:18:18,181 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/config/svcomp-Overflow-32bit-GemCutter_Default.epf [2024-11-13 12:18:18,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:18:18,187 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:18:18,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:18:18,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:18:18,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:18:18,217 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:18:18,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:18:18,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:18:18,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:18:18,218 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:18:18,218 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:18:18,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:18:18,218 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:18:18,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:18:18,219 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:18:18,219 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:18:18,219 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:18:18,219 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:18:18,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:18:18,220 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:18:18,220 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 12:18:18,220 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 12:18:18,220 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:18:18,220 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:18:18,220 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:18:18,221 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:18:18,221 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:18:18,221 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:18:18,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:18:18,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 12:18:18,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:18:18,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:18:18,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:18:18,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:18:18,222 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-13 12:18:18,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:18:18,222 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:18:18,222 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2024-11-13 12:18:18,222 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-13 12:18:18,223 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-13 12:18:18,223 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-13 12:18:18,223 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_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F 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 -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2024-11-13 12:18:18,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:18:18,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:18:18,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:18:18,584 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:18:18,585 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:18:18,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/../../sv-benchmarks/c/pthread/queue_ok_longest.i Unable to find full path for "g++" [2024-11-13 12:18:20,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:18:21,240 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:18:21,244 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-13 12:18:21,274 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/data/392704435/79b802483a5c4892bf636ef0b0d0e3f5/FLAG9f48090d7 [2024-11-13 12:18:21,412 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/data/392704435/79b802483a5c4892bf636ef0b0d0e3f5 [2024-11-13 12:18:21,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:18:21,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:18:21,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:18:21,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:18:21,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:18:21,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:18:21" (1/1) ... [2024-11-13 12:18:21,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d71825b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:21, skipping insertion in model container [2024-11-13 12:18:21,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:18:21" (1/1) ... [2024-11-13 12:18:21,479 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:18:22,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:18:22,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:18:22,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:18:22,542 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:18:22,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22 WrapperNode [2024-11-13 12:18:22,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:18:22,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:18:22,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:18:22,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:18:22,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,815 INFO L138 Inliner]: procedures = 277, calls = 1657, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 1814 [2024-11-13 12:18:22,815 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:18:22,817 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:18:22,817 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:18:22,817 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:18:22,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:18:22,964 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:18:22,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:18:22,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:18:22,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:18:22" (1/1) ... [2024-11-13 12:18:22,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-13 12:18:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/z3 [2024-11-13 12:18:23,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-13 12:18:23,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_730598c4-a47a-4310-8af5-cf59c7dc6e3e/bin/ugemcutter-verify-yV71Fz5F0F/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-13 12:18:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-13 12:18:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-13 12:18:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-13 12:18:23,051 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-13 12:18:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-13 12:18:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 12:18:23,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-13 12:18:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-13 12:18:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 12:18:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:18:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-13 12:18:23,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:18:23,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:18:23,054 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 12:18:23,293 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:18:23,296 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:18:26,561 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 12:18:26,561 INFO L287 CfgBuilder]: Performing block encoding