./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e523f48 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/config/GemCutterReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y --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 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-5e523f4 [2024-11-21 00:50:46,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-21 00:50:46,784 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-11-21 00:50:46,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-21 00:50:46,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-21 00:50:46,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-21 00:50:46,829 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-21 00:50:46,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-21 00:50:46,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-21 00:50:46,831 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-21 00:50:46,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-21 00:50:46,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-21 00:50:46,833 INFO L153 SettingsManager]: * Use SBE=true [2024-11-21 00:50:46,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-21 00:50:46,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-21 00:50:46,833 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-21 00:50:46,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-21 00:50:46,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-21 00:50:46,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-21 00:50:46,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-21 00:50:46,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-21 00:50:46,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-21 00:50:46,835 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-21 00:50:46,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-21 00:50:46,835 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-21 00:50:46,835 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-21 00:50:46,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-21 00:50:46,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-21 00:50:46,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-21 00:50:46,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-21 00:50:46,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-21 00:50:46,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-21 00:50:46,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-21 00:50:46,837 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-21 00:50:46,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-21 00:50:46,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-21 00:50:46,838 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-11-21 00:50:46,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-21 00:50:46,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-21 00:50:46,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-11-21 00:50:46,838 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-11-21 00:50:46,839 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-11-21 00:50:46,839 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_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y 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 -> 0e9bc4a9a6dcd238ac18925269a0bd7c8c54c2dafb57744151e37b58cf6eab8d [2024-11-21 00:50:47,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-21 00:50:47,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-21 00:50:47,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-21 00:50:47,157 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-21 00:50:47,158 INFO L274 PluginConnector]: CDTParser initialized [2024-11-21 00:50:47,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/../../sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-21 00:50:50,031 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/data/c85ca57db/c8698908faf6436888a1fc816e609a87/FLAG8418f63dc [2024-11-21 00:50:50,557 INFO L384 CDTParser]: Found 1 translation units. [2024-11-21 00:50:50,560 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/sv-benchmarks/c/pthread/queue_ok_longest.i [2024-11-21 00:50:50,584 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/data/c85ca57db/c8698908faf6436888a1fc816e609a87/FLAG8418f63dc [2024-11-21 00:50:50,606 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/data/c85ca57db/c8698908faf6436888a1fc816e609a87 [2024-11-21 00:50:50,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-21 00:50:50,610 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-21 00:50:50,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-21 00:50:50,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-21 00:50:50,617 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-21 00:50:50,618 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:50" (1/1) ... [2024-11-21 00:50:50,619 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cef285f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:50, skipping insertion in model container [2024-11-21 00:50:50,621 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:50:50" (1/1) ... [2024-11-21 00:50:50,669 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-21 00:50:51,158 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_6ac8bbb7-89da-4260-86d1-b05829259efd/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2024-11-21 00:50:51,163 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_6ac8bbb7-89da-4260-86d1-b05829259efd/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2024-11-21 00:50:51,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 00:50:51,232 INFO L200 MainTranslator]: Completed pre-run [2024-11-21 00:50:51,282 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_6ac8bbb7-89da-4260-86d1-b05829259efd/sv-benchmarks/c/pthread/queue_ok_longest.i[43280,43293] [2024-11-21 00:50:51,284 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_6ac8bbb7-89da-4260-86d1-b05829259efd/sv-benchmarks/c/pthread/queue_ok_longest.i[43553,43566] [2024-11-21 00:50:51,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-21 00:50:51,468 INFO L204 MainTranslator]: Completed translation [2024-11-21 00:50:51,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51 WrapperNode [2024-11-21 00:50:51,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-21 00:50:51,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-21 00:50:51,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-21 00:50:51,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-21 00:50:51,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,670 INFO L138 Inliner]: procedures = 274, calls = 1652, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 1795 [2024-11-21 00:50:51,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-21 00:50:51,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-21 00:50:51,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-21 00:50:51,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-21 00:50:51,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,702 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,789 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,792 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,832 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-21 00:50:51,833 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-21 00:50:51,833 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-21 00:50:51,833 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-21 00:50:51,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:50:51" (1/1) ... [2024-11-21 00:50:51,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-21 00:50:51,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/z3 [2024-11-21 00:50:51,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-21 00:50:51,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac8bbb7-89da-4260-86d1-b05829259efd/bin/ugemcutter-verify-jAHUagO94Y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-21 00:50:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-21 00:50:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-21 00:50:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-21 00:50:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-21 00:50:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-21 00:50:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-21 00:50:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-21 00:50:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-21 00:50:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-21 00:50:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-21 00:50:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-21 00:50:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-21 00:50:51,908 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-21 00:50:52,106 INFO L234 CfgBuilder]: Building ICFG [2024-11-21 00:50:52,107 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-21 00:50:54,648 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-21 00:50:54,649 INFO L283 CfgBuilder]: Performing block encoding