./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-queue-add-2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c ./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-queue-add-2.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 11:03:19,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 11:03:19,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 11:03:19,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 11:03:19,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 11:03:19,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 11:03:19,326 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 11:03:19,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 11:03:19,327 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 11:03:19,327 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 11:03:19,328 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 11:03:19,328 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 11:03:19,328 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 11:03:19,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 11:03:19,329 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 11:03:19,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 11:03:19,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 11:03:19,330 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 11:03:19,330 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 11:03:19,330 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 11:03:19,330 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 11:03:19,331 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 11:03:19,331 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 11:03:19,331 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 11:03:19,331 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 11:03:19,331 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 11:03:19,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 11:03:19,332 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 11:03:19,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 11:03:19,332 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 11:03:19,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 11:03:19,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 11:03:19,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:03:19,333 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 11:03:19,333 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 11:03:19,334 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 11:03:19,334 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 11:03:19,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 11:03:19,334 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 11:03:19,334 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 11:03:19,334 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 11:03:19,335 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 11:03:19,335 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 11:03:19,335 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 11:03:19,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 11:03:19,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 11:03:19,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 11:03:19,510 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 11:03:19,510 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 11:03:19,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/popl20-queue-add-2.wvr.yml/witness.yml [2024-05-12 11:03:19,585 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 11:03:19,586 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 11:03:19,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2024-05-12 11:03:20,616 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 11:03:20,770 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 11:03:20,771 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2024-05-12 11:03:20,780 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ec01488/c9e54c51523549c5a00f1da80ac0e44f/FLAGf204595a1 [2024-05-12 11:03:20,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ec01488/c9e54c51523549c5a00f1da80ac0e44f [2024-05-12 11:03:20,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 11:03:20,794 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 11:03:20,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 11:03:20,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 11:03:20,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 11:03:20,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:03:19" (1/2) ... [2024-05-12 11:03:20,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e589ad7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:03:20, skipping insertion in model container [2024-05-12 11:03:20,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:03:19" (1/2) ... [2024-05-12 11:03:20,802 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c2cb85d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:03:20, skipping insertion in model container [2024-05-12 11:03:20,803 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:03:20" (2/2) ... [2024-05-12 11:03:20,804 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e589ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:20, skipping insertion in model container [2024-05-12 11:03:20,804 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:03:20" (2/2) ... [2024-05-12 11:03:20,805 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 11:03:20,819 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 11:03:20,820 INFO L97 edCorrectnessWitness]: Location invariant before [L94-L94] ! multithreaded || (((((((((4294967295LL + (long long )q_back) + (long long )q_front >= 0LL && (4294967296LL + (long long )n) + (long long )q_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q_front >= 0LL) && (4294967296LL + (long long )N) + (long long )n >= 0LL) && (4294967295LL - (long long )n) + (long long )q_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q_front >= 0LL) && (4294967295LL - (long long )N) + (long long )n >= 0LL) && (4294967295LL + (long long )N) - (long long )n >= 0LL) && (4294967294LL - (long long )N) - (long long )n >= 0LL) [2024-05-12 11:03:20,820 INFO L97 edCorrectnessWitness]: Location invariant before [L93-L93] ! multithreaded || (((((((((4294967295LL + (long long )q_back) + (long long )q_front >= 0LL && (4294967296LL + (long long )n) + (long long )q_front >= 0LL) && (4294967296LL + (long long )N) + (long long )q_front >= 0LL) && (4294967296LL + (long long )N) + (long long )n >= 0LL) && (4294967295LL - (long long )n) + (long long )q_front >= 0LL) && (4294967295LL - (long long )N) + (long long )q_front >= 0LL) && (4294967295LL - (long long )N) + (long long )n >= 0LL) && (4294967295LL + (long long )N) - (long long )n >= 0LL) && (4294967294LL - (long long )N) - (long long )n >= 0LL) [2024-05-12 11:03:20,820 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 11:03:20,821 INFO L106 edCorrectnessWitness]: ghost_update [L92-L92] multithreaded = 1; [2024-05-12 11:03:20,840 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 11:03:20,974 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2696,2709] [2024-05-12 11:03:20,980 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:03:20,986 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 11:03:21,028 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2696,2709] [2024-05-12 11:03:21,031 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:03:21,042 INFO L206 MainTranslator]: Completed translation [2024-05-12 11:03:21,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21 WrapperNode [2024-05-12 11:03:21,042 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 11:03:21,043 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 11:03:21,043 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 11:03:21,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 11:03:21,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,053 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,082 INFO L138 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 164 [2024-05-12 11:03:21,082 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 11:03:21,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 11:03:21,083 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 11:03:21,083 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 11:03:21,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,097 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,120 INFO L175 MemorySlicer]: Split 10 memory accesses to 4 slices as follows [2, 2, 2, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 11:03:21,121 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,128 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,131 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 11:03:21,132 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 11:03:21,132 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 11:03:21,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 11:03:21,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (1/1) ... [2024-05-12 11:03:21,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:03:21,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:03:21,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-05-12 11:03:21,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-05-12 11:03:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 11:03:21,180 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-05-12 11:03:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-05-12 11:03:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-05-12 11:03:21,181 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-05-12 11:03:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 11:03:21,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 11:03:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 11:03:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 11:03:21,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 11:03:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 11:03:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 11:03:21,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 11:03:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 11:03:21,184 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 11:03:21,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 11:03:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-05-12 11:03:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 11:03:21,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 11:03:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 11:03:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 11:03:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 11:03:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-05-12 11:03:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 11:03:21,188 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 11:03:21,287 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 11:03:21,288 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 11:03:21,553 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 11:03:21,554 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 11:03:21,695 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 11:03:21,695 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-05-12 11:03:21,696 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:03:21 BoogieIcfgContainer [2024-05-12 11:03:21,696 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 11:03:21,698 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 11:03:21,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 11:03:21,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 11:03:21,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:03:19" (1/4) ... [2024-05-12 11:03:21,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573eeadd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:03:21, skipping insertion in model container [2024-05-12 11:03:21,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 11:03:20" (2/4) ... [2024-05-12 11:03:21,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573eeadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:03:21, skipping insertion in model container [2024-05-12 11:03:21,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:03:21" (3/4) ... [2024-05-12 11:03:21,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573eeadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:03:21, skipping insertion in model container [2024-05-12 11:03:21,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:03:21" (4/4) ... [2024-05-12 11:03:21,704 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2024-05-12 11:03:21,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 11:03:21,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-05-12 11:03:21,717 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 11:03:21,763 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-12 11:03:21,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 86 flow [2024-05-12 11:03:21,834 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-05-12 11:03:21,835 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-05-12 11:03:21,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 34 events. 4/34 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 45 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-05-12 11:03:21,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 86 flow [2024-05-12 11:03:21,841 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 78 flow [2024-05-12 11:03:21,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 11:03:21,852 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4c66f454, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 11:03:21,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-05-12 11:03:21,855 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 11:03:21,856 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-05-12 11:03:21,856 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 11:03:21,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:03:21,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:03:21,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-05-12 11:03:21,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:03:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash 441202646, now seen corresponding path program 1 times [2024-05-12 11:03:21,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:03:21,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133595839] [2024-05-12 11:03:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:03:21,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:03:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 11:03:22,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-12 11:03:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-12 11:03:22,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-12 11:03:22,098 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-12 11:03:22,099 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 5 remaining) [2024-05-12 11:03:22,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 5 remaining) [2024-05-12 11:03:22,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-05-12 11:03:22,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2024-05-12 11:03:22,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2024-05-12 11:03:22,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 11:03:22,102 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-05-12 11:03:22,109 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 11:03:22,110 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 11:03:22,139 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-05-12 11:03:22,140 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-05-12 11:03:22,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 11:03:22 BasicIcfg [2024-05-12 11:03:22,142 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 11:03:22,143 INFO L158 Benchmark]: Toolchain (without parser) took 1348.38ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 64.6MB in the beginning and 155.5MB in the end (delta: -90.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:03:22,143 INFO L158 Benchmark]: Witness Parser took 0.09ms. Allocated memory is still 138.4MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:03:22,143 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:03:22,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.34ms. Allocated memory is still 138.4MB. Free memory was 64.5MB in the beginning and 49.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-05-12 11:03:22,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.42ms. Allocated memory is still 138.4MB. Free memory was 49.2MB in the beginning and 109.2MB in the end (delta: -60.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-05-12 11:03:22,147 INFO L158 Benchmark]: Boogie Preprocessor took 48.51ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 109.2MB in the beginning and 165.3MB in the end (delta: -56.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2024-05-12 11:03:22,148 INFO L158 Benchmark]: RCFGBuilder took 564.03ms. Allocated memory is still 195.0MB. Free memory was 165.3MB in the beginning and 116.1MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-05-12 11:03:22,148 INFO L158 Benchmark]: TraceAbstraction took 443.84ms. Allocated memory is still 195.0MB. Free memory was 116.1MB in the beginning and 155.5MB in the end (delta: -39.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 11:03:22,151 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.09ms. Allocated memory is still 138.4MB. Free memory is still 91.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 138.4MB. Free memory is still 110.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.34ms. Allocated memory is still 138.4MB. Free memory was 64.5MB in the beginning and 49.2MB in the end (delta: 15.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.42ms. Allocated memory is still 138.4MB. Free memory was 49.2MB in the beginning and 109.2MB in the end (delta: -60.0MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.51ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 109.2MB in the beginning and 165.3MB in the end (delta: -56.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * RCFGBuilder took 564.03ms. Allocated memory is still 195.0MB. Free memory was 165.3MB in the beginning and 116.1MB in the end (delta: 49.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 443.84ms. Allocated memory is still 195.0MB. Free memory was 116.1MB in the beginning and 155.5MB in the end (delta: -39.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 93]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L41] 0 int *q; [L42] 0 int q_front, q_back, s, n, N; [L81] 0 pthread_t t1, t2; [L83] 0 N = __VERIFIER_nondet_int() [L84] 0 n = __VERIFIER_nondet_int() [L85] 0 q_front = __VERIFIER_nondet_int() [L86] 0 q_back = q_front [L87] CALL, EXPR 0 create_fresh_int_array(n) [L104] CALL 0 assume_abort_if_not(size >= 0) [L38] COND FALSE 0 !(!cond) [L104] RET 0 assume_abort_if_not(size >= 0) [L105] CALL 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L38] COND FALSE 0 !(!cond) [L105] RET 0 assume_abort_if_not(size <= (((size_t) 4294967295) / sizeof(int))) [L107] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); [L108] 0 int i = 0; VAL [N=0, \old(size)=0, arr={-2:0}, i=0, n=0, q={0:0}, q_back=-2147483648, q_front=-2147483648, s=0, size=0] [L108] COND FALSE 0 !(i < size) [L111] 0 return arr; [L87] RET, EXPR 0 create_fresh_int_array(n) [L87] 0 q = create_fresh_int_array(n) [L89] CALL 0 assume_abort_if_not(N >= 0) [L38] COND FALSE 0 !(!cond) [L89] RET 0 assume_abort_if_not(N >= 0) [L92] 0 //@ ghost multithreaded = 1; [L92] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [N=0, n=0, q={-2:0}, q_back=-2147483648, q_front=-2147483648, s=0, t1={5:0}, t2={3:0}] [L93] 0 //@ assert (!multithreaded || (((((((((((4294967295LL + (long long) q_back) + (long long) q_front) >= 0LL) && (((4294967296LL + (long long) n) + (long long) q_front) >= 0LL)) && (((4294967296LL + (long long) N) + (long long) q_front) >= 0LL)) && (((4294967296LL + (long long) N) + (long long) n) >= 0LL)) && (((4294967295LL - (long long) n) + (long long) q_front) >= 0LL)) && (((4294967295LL - (long long) N) + (long long) q_front) >= 0LL)) && (((4294967295LL - (long long) N) + (long long) n) >= 0LL)) && (((4294967295LL + (long long) N) - (long long) n) >= 0LL)) && (((4294967294LL - (long long) N) - (long long) n) >= 0LL))); VAL [N=0, n=0, q={-2:0}, q_back=-2147483648, q_front=-2147483648, s=0, t1={5:0}, t2={3:0}] - UnprovableResult [Line: 94]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 92]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 93]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 49 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-05-12 11:03:22,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE