./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/queue_longest.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-09-02_08-21-23.files/mutex-meet-local/queue_longest.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e94c40da 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_longest.i ./goblint.2024-09-02_08-21-23.files/mutex-meet-local/queue_longest.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 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-e94c40d-m [2024-09-23 19:05:48,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-23 19:05:48,169 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2024-09-23 19:05:48,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-23 19:05:48,176 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-23 19:05:48,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-23 19:05:48,212 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-23 19:05:48,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-23 19:05:48,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-23 19:05:48,216 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-23 19:05:48,217 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-23 19:05:48,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-23 19:05:48,218 INFO L153 SettingsManager]: * Use SBE=true [2024-09-23 19:05:48,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-23 19:05:48,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-23 19:05:48,222 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-23 19:05:48,226 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-23 19:05:48,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-23 19:05:48,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-23 19:05:48,227 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-23 19:05:48,227 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-23 19:05:48,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-23 19:05:48,228 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-23 19:05:48,228 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-23 19:05:48,228 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-23 19:05:48,229 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-23 19:05:48,229 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-23 19:05:48,229 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-23 19:05:48,229 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-23 19:05:48,230 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-23 19:05:48,230 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-23 19:05:48,230 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-23 19:05:48,230 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-23 19:05:48,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-23 19:05:48,231 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-23 19:05:48,231 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2024-09-23 19:05:48,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-23 19:05:48,233 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-23 19:05:48,233 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-09-23 19:05:48,233 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2024-09-23 19:05:48,234 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2024-09-23 19:05:48,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> None Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-09-23 19:05:48,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-23 19:05:48,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-23 19:05:48,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-23 19:05:48,519 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-09-23 19:05:48,519 INFO L274 PluginConnector]: Witness Parser initialized [2024-09-23 19:05:48,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/./goblint.2024-09-02_08-21-23.files/mutex-meet-local/queue_longest.yml/witness.yml [2024-09-23 19:05:48,608 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-23 19:05:48,608 INFO L274 PluginConnector]: CDTParser initialized [2024-09-23 19:05:48,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2024-09-23 19:05:50,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-23 19:05:50,308 INFO L384 CDTParser]: Found 1 translation units. [2024-09-23 19:05:50,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2024-09-23 19:05:50,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/0cf443167/4b70aeb4b848446aa790d18922d7cf7d/FLAGb090d6138 [2024-09-23 19:05:50,631 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/0cf443167/4b70aeb4b848446aa790d18922d7cf7d [2024-09-23 19:05:50,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-23 19:05:50,633 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-09-23 19:05:50,634 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-23 19:05:50,634 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-23 19:05:50,639 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-23 19:05:50,640 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.09 07:05:48" (1/2) ... [2024-09-23 19:05:50,641 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494a978b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.09 07:05:50, skipping insertion in model container [2024-09-23 19:05:50,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 23.09 07:05:48" (1/2) ... [2024-09-23 19:05:50,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@56e796f3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 23.09 07:05:50, skipping insertion in model container [2024-09-23 19:05:50,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.09 07:05:50" (2/2) ... [2024-09-23 19:05:50,644 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@494a978b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:50, skipping insertion in model container [2024-09-23 19:05:50,644 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.09 07:05:50" (2/2) ... [2024-09-23 19:05:50,689 INFO L93 nessWitnessExtractor]: Found the following entries in the witness: [2024-09-23 19:05:50,689 INFO L1541 ArrayList]: Location invariant before [L1009-L1009] (((((0 <= queue.head) && (0 <= queue.tail)) && (queue.head <= 800)) && (queue.tail <= 800)) && ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL)) && ((1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL) [2024-09-23 19:05:50,690 INFO L1541 ArrayList]: Location invariant before [L1021-L1028] (((((0 <= queue.head) && (0 <= queue.tail)) && (queue.head <= 800)) && (queue.tail <= 800)) && ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL)) && ((1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL) [2024-09-23 19:05:50,690 INFO L1541 ArrayList]: Location invariant before [L1040-L1047] (((((0 <= queue.head) && (0 <= queue.tail)) && (queue.head <= 800)) && (queue.tail <= 800)) && ((-1LL + (long long )dequeue_flag) + (long long )enqueue_flag >= 0LL)) && ((1LL - (long long )dequeue_flag) - (long long )enqueue_flag >= 0LL) [2024-09-23 19:05:50,743 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-23 19:05:51,212 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2024-09-23 19:05:51,221 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2024-09-23 19:05:51,224 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2024-09-23 19:05:51,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-23 19:05:51,245 INFO L200 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-09-23 19:05:52,195 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2024-09-23 19:05:52,237 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] Start Parsing Local [2024-09-23 19:05:52,536 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2024-09-23 19:05:52,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-23 19:05:52,598 INFO L204 MainTranslator]: Completed translation [2024-09-23 19:05:52,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52 WrapperNode [2024-09-23 19:05:52,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-23 19:05:52,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-23 19:05:52,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-23 19:05:52,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-23 19:05:52,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:52,796 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:53,418 INFO L138 Inliner]: procedures = 274, calls = 9689, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 29129 [2024-09-23 19:05:53,419 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-23 19:05:53,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-23 19:05:53,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-23 19:05:53,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-23 19:05:53,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:53,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:53,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:53,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:54,205 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:54,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:54,444 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:54,478 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:54,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-23 19:05:54,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-23 19:05:54,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-23 19:05:54,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-23 19:05:54,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.09 07:05:52" (1/1) ... [2024-09-23 19:05:54,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-09-23 19:05:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-09-23 19:05:54,598 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) [2024-09-23 19:05:54,603 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 [2024-09-23 19:05:54,646 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-09-23 19:05:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-09-23 19:05:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-09-23 19:05:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-09-23 19:05:54,647 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-09-23 19:05:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-09-23 19:05:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-09-23 19:05:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-09-23 19:05:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-23 19:05:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-09-23 19:05:54,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-23 19:05:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-23 19:05:54,655 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-09-23 19:05:55,942 INFO L242 CfgBuilder]: Building ICFG [2024-09-23 19:05:55,944 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-23 19:06:10,460 INFO L287 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-09-23 19:06:10,460 INFO L291 CfgBuilder]: Performing block encoding Killed by 15