./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_ok_longer.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-09-02_08-21-23.files/mutex-meet-ghost/queue_ok_longer.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a4c57e3 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/queue_ok_longer.i ./goblint.2024-09-02_08-21-23.files/mutex-meet-ghost/queue_ok_longer.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.positions.where.we.compute.the.hoare.annotation None --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-4a4c57e-m [2024-09-07 21:14:58,877 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-07 21:14:58,949 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-07 21:14:58,955 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-07 21:14:58,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-07 21:14:58,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-07 21:14:58,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-07 21:14:58,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-07 21:14:58,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-07 21:14:58,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-07 21:14:58,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-07 21:14:58,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-07 21:14:58,993 INFO L153 SettingsManager]: * Use SBE=true [2024-09-07 21:14:58,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-07 21:14:58,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-07 21:14:58,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-07 21:14:58,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-07 21:14:58,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-07 21:14:58,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-07 21:14:58,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-07 21:14:58,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-07 21:14:58,997 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-07 21:14:58,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-07 21:14:58,997 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-07 21:14:58,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-07 21:14:58,998 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-07 21:14:58,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-07 21:14:58,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-07 21:14:58,999 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-07 21:14:58,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-07 21:14:58,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-07 21:14:58,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-07 21:14:58,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-07 21:14:59,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-07 21:14:59,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-07 21:14:59,002 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-07 21:14:59,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-07 21:14:59,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-07 21:14:59,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-07 21:14:59,003 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-07 21:14:59,003 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-07 21:14:59,004 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:/storage/repos/ultimate/releaseScripts/default/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-09-07 21:14:59,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-07 21:14:59,312 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-07 21:14:59,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-07 21:14:59,317 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-07 21:14:59,317 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-07 21:14:59,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-09-02_08-21-23.files/mutex-meet-ghost/queue_ok_longer.yml/witness.yml [2024-09-07 21:14:59,408 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-07 21:14:59,408 INFO L274 PluginConnector]: CDTParser initialized [2024-09-07 21:14:59,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/queue_ok_longer.i [2024-09-07 21:15:00,815 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-07 21:15:01,086 INFO L384 CDTParser]: Found 1 translation units. [2024-09-07 21:15:01,087 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_ok_longer.i [2024-09-07 21:15:01,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/312035333/86c7a84ddafa4e488705eb08ad7b3549/FLAG305c3de36 [2024-09-07 21:15:01,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/312035333/86c7a84ddafa4e488705eb08ad7b3549 [2024-09-07 21:15:01,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-07 21:15:01,404 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-07 21:15:01,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-07 21:15:01,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-07 21:15:01,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-07 21:15:01,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.09 09:14:59" (1/2) ... [2024-09-07 21:15:01,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2103a2db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.09 09:15:01, skipping insertion in model container [2024-09-07 21:15:01,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.09 09:14:59" (1/2) ... [2024-09-07 21:15:01,415 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5218a842 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.09 09:15:01, skipping insertion in model container [2024-09-07 21:15:01,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:15:01" (2/2) ... [2024-09-07 21:15:01,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2103a2db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:01, skipping insertion in model container [2024-09-07 21:15:01,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:15:01" (2/2) ... [2024-09-07 21:15:01,468 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-07 21:15:01,470 INFO L1541 ArrayList]: Location invariant before [L1054-L1054] ((! multithreaded || (m_locked || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 400) && queue.tail <= 400))) && (! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 400) && queue.tail <= 400))) && (! multithreaded || (m_locked || ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL && (1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL))) [2024-09-07 21:15:01,470 INFO L1541 ArrayList]: Location invariant before [L1053-L1053] ((! multithreaded || (m_locked || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 400) && queue.tail <= 400))) && (! multithreaded || (((0 <= queue.head && 0 <= queue.tail) && queue.head <= 400) && queue.tail <= 400))) && (! multithreaded || (m_locked || ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL && (1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL))) [2024-09-07 21:15:01,470 INFO L1541 ArrayList]: ghost_variable m_locked = 0 [2024-09-07 21:15:01,471 INFO L1541 ArrayList]: ghost_variable multithreaded = 0 [2024-09-07 21:15:01,471 INFO L1541 ArrayList]: ghost_update [L1020-L1020] m_locked = 0; [2024-09-07 21:15:01,471 INFO L1541 ArrayList]: ghost_update [L1026-L1026] m_locked = 1; [2024-09-07 21:15:01,472 INFO L1541 ArrayList]: ghost_update [L1008-L1008] m_locked = 1; [2024-09-07 21:15:01,472 INFO L1541 ArrayList]: ghost_update [L1039-L1039] m_locked = 0; [2024-09-07 21:15:01,473 INFO L1541 ArrayList]: ghost_update [L1052-L1052] multithreaded = 1; [2024-09-07 21:15:01,522 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-07 21:15:02,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-07 21:15:02,020 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-09-07 21:15:02,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-07 21:15:02,742 INFO L204 MainTranslator]: Completed translation [2024-09-07 21:15:02,743 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02 WrapperNode [2024-09-07 21:15:02,744 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-07 21:15:02,745 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-07 21:15:02,745 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-07 21:15:02,745 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-07 21:15:02,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:02,931 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:03,474 INFO L138 Inliner]: procedures = 274, calls = 6499, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 19524 [2024-09-07 21:15:03,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-07 21:15:03,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-07 21:15:03,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-07 21:15:03,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-07 21:15:03,486 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:03,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:03,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:03,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:04,038 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:04,096 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:04,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:04,187 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:04,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-07 21:15:04,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-07 21:15:04,358 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-07 21:15:04,358 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-07 21:15:04,359 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:15:02" (1/1) ... [2024-09-07 21:15:04,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-07 21:15:04,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-07 21:15:04,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-09-07 21:15:04,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-09-07 21:15:04,543 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-09-07 21:15:04,544 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-09-07 21:15:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-09-07 21:15:04,547 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-09-07 21:15:04,547 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-09-07 21:15:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-07 21:15:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-07 21:15:04,548 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-09-07 21:15:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-07 21:15:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-07 21:15:04,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-07 21:15:04,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-07 21:15:04,555 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-07 21:15:05,766 INFO L242 CfgBuilder]: Building ICFG [2024-09-07 21:15:05,768 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-07 21:15:16,420 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-07 21:15:16,420 INFO L291 CfgBuilder]: Performing block encoding