./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/singleton.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/config/svcomp-Overflow-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-15 00:43:36,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-15 00:43:36,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-15 00:43:36,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-15 00:43:36,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-15 00:43:36,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-15 00:43:36,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-15 00:43:36,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-15 00:43:36,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-15 00:43:36,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-15 00:43:36,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-15 00:43:36,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-15 00:43:36,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-15 00:43:36,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-15 00:43:36,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-15 00:43:36,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-15 00:43:36,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-15 00:43:36,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-15 00:43:36,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-15 00:43:36,857 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-15 00:43:36,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-15 00:43:36,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-15 00:43:36,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-15 00:43:36,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-15 00:43:36,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-15 00:43:36,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-15 00:43:36,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-15 00:43:36,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-15 00:43:36,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-15 00:43:36,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-15 00:43:36,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-15 00:43:36,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-15 00:43:36,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-15 00:43:36,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-15 00:43:36,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-15 00:43:36,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-15 00:43:36,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-15 00:43:36,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-15 00:43:36,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-15 00:43:36,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-15 00:43:36,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-15 00:43:36,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/config/svcomp-Overflow-32bit-Kojak_Default.epf [2022-12-15 00:43:36,896 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-15 00:43:36,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-15 00:43:36,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-15 00:43:36,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-15 00:43:36,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-15 00:43:36,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-15 00:43:36,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-15 00:43:36,898 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-15 00:43:36,899 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-15 00:43:36,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-15 00:43:36,899 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-15 00:43:36,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-15 00:43:36,899 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-15 00:43:36,899 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-15 00:43:36,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-15 00:43:36,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-15 00:43:36,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-15 00:43:36,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-15 00:43:36,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-15 00:43:36,900 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-15 00:43:36,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-15 00:43:36,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-15 00:43:36,900 INFO L138 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2022-12-15 00:43:37,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-15 00:43:37,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-15 00:43:37,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-15 00:43:37,101 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-15 00:43:37,102 INFO L275 PluginConnector]: CDTParser initialized [2022-12-15 00:43:37,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/pthread/singleton.i [2022-12-15 00:43:39,607 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-15 00:43:39,806 INFO L351 CDTParser]: Found 1 translation units. [2022-12-15 00:43:39,806 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/sv-benchmarks/c/pthread/singleton.i [2022-12-15 00:43:39,817 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/data/7c55dc243/3fda7401c60f486ba50f6b9df6ec3a0b/FLAGf73e2fa3d [2022-12-15 00:43:40,175 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/data/7c55dc243/3fda7401c60f486ba50f6b9df6ec3a0b [2022-12-15 00:43:40,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-15 00:43:40,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-15 00:43:40,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-15 00:43:40,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-15 00:43:40,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-15 00:43:40,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf301c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40, skipping insertion in model container [2022-12-15 00:43:40,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-15 00:43:40,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-15 00:43:40,348 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-15 00:43:40,495 WARN L237 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_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-12-15 00:43:40,498 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-15 00:43:40,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-15 00:43:40,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-15 00:43:40,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-15 00:43:40,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-15 00:43:40,515 INFO L203 MainTranslator]: Completed pre-run [2022-12-15 00:43:40,527 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-15 00:43:40,543 WARN L237 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_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-12-15 00:43:40,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-15 00:43:40,544 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-15 00:43:40,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-15 00:43:40,545 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-15 00:43:40,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-15 00:43:40,587 INFO L208 MainTranslator]: Completed translation [2022-12-15 00:43:40,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40 WrapperNode [2022-12-15 00:43:40,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-15 00:43:40,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-15 00:43:40,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-15 00:43:40,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-15 00:43:40,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,619 INFO L138 Inliner]: procedures = 325, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-12-15 00:43:40,619 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-15 00:43:40,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-15 00:43:40,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-15 00:43:40,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-15 00:43:40,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,647 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-15 00:43:40,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-15 00:43:40,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-15 00:43:40,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-15 00:43:40,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-15 00:43:40,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/z3 [2022-12-15 00:43:40,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-15 00:43:40,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-15 00:43:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-15 00:43:40,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-12-15 00:43:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-15 00:43:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-15 00:43:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-15 00:43:40,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-15 00:43:40,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-15 00:43:40,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-15 00:43:40,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-15 00:43:40,719 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-15 00:43:40,820 INFO L235 CfgBuilder]: Building ICFG [2022-12-15 00:43:40,821 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-15 00:43:40,973 INFO L276 CfgBuilder]: Performing block encoding [2022-12-15 00:43:40,978 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-15 00:43:40,978 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-15 00:43:40,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:43:40 BoogieIcfgContainer [2022-12-15 00:43:40,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-15 00:43:40,981 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-15 00:43:40,981 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-15 00:43:40,989 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-15 00:43:40,989 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:43:40" (1/1) ... [2022-12-15 00:43:40,990 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck has thrown an exception: java.lang.UnsupportedOperationException: Concurrent programs are currently unsupported at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.initialize(CodeCheckObserver.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.process(CodeCheckObserver.java:358) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.CFGWalker.runObserver(CFGWalker.java:57) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-15 00:43:40,993 INFO L158 Benchmark]: Toolchain (without parser) took 813.72ms. Allocated memory is still 127.9MB. Free memory was 91.5MB in the beginning and 85.5MB in the end (delta: 6.0MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2022-12-15 00:43:40,993 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-15 00:43:40,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.70ms. Allocated memory is still 127.9MB. Free memory was 91.5MB in the beginning and 58.0MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-12-15 00:43:40,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.65ms. Allocated memory is still 127.9MB. Free memory was 58.0MB in the beginning and 55.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-15 00:43:40,994 INFO L158 Benchmark]: Boogie Preprocessor took 31.15ms. Allocated memory is still 127.9MB. Free memory was 55.9MB in the beginning and 99.7MB in the end (delta: -43.8MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2022-12-15 00:43:40,995 INFO L158 Benchmark]: RCFGBuilder took 328.96ms. Allocated memory is still 127.9MB. Free memory was 99.6MB in the beginning and 86.9MB in the end (delta: 12.7MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-12-15 00:43:40,996 INFO L158 Benchmark]: CodeCheck took 10.57ms. Allocated memory is still 127.9MB. Free memory was 86.9MB in the beginning and 85.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-15 00:43:40,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - ExceptionOrErrorResult: UnsupportedOperationException: Concurrent programs are currently unsupported de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: UnsupportedOperationException: Concurrent programs are currently unsupported: de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.initialize(CodeCheckObserver.java:173) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 104.9MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.70ms. Allocated memory is still 127.9MB. Free memory was 91.5MB in the beginning and 58.0MB in the end (delta: 33.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.65ms. Allocated memory is still 127.9MB. Free memory was 58.0MB in the beginning and 55.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.15ms. Allocated memory is still 127.9MB. Free memory was 55.9MB in the beginning and 99.7MB in the end (delta: -43.8MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * RCFGBuilder took 328.96ms. Allocated memory is still 127.9MB. Free memory was 99.6MB in the beginning and 86.9MB in the end (delta: 12.7MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * CodeCheck took 10.57ms. Allocated memory is still 127.9MB. Free memory was 86.9MB in the beginning and 85.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-15 00:43:41,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/config/svcomp-Overflow-32bit-Kojak_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-15 00:43:42,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-15 00:43:42,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-15 00:43:42,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-15 00:43:42,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-15 00:43:42,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-15 00:43:42,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-15 00:43:42,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-15 00:43:42,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-15 00:43:42,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-15 00:43:42,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-15 00:43:42,832 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-15 00:43:42,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-15 00:43:42,834 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-15 00:43:42,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-15 00:43:42,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-15 00:43:42,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-15 00:43:42,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-15 00:43:42,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-15 00:43:42,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-15 00:43:42,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-15 00:43:42,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-15 00:43:42,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-15 00:43:42,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-15 00:43:42,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-15 00:43:42,850 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-15 00:43:42,850 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-15 00:43:42,851 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-15 00:43:42,851 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-15 00:43:42,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-15 00:43:42,853 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-15 00:43:42,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-15 00:43:42,854 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-15 00:43:42,855 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-15 00:43:42,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-15 00:43:42,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-15 00:43:42,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-15 00:43:42,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-15 00:43:42,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-15 00:43:42,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-15 00:43:42,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-15 00:43:42,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/config/svcomp-Overflow-32bit-Kojak_Bitvector.epf [2022-12-15 00:43:42,874 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-15 00:43:42,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-15 00:43:42,875 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-15 00:43:42,875 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-15 00:43:42,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-15 00:43:42,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-15 00:43:42,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-15 00:43:42,876 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-15 00:43:42,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-15 00:43:42,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-15 00:43:42,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-15 00:43:42,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-15 00:43:42,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-15 00:43:42,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-15 00:43:42,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-15 00:43:42,877 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-15 00:43:42,878 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-15 00:43:42,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-15 00:43:42,878 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-15 00:43:42,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-15 00:43:42,878 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-15 00:43:42,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-15 00:43:42,879 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-15 00:43:42,879 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-15 00:43:42,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-15 00:43:42,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-15 00:43:42,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-15 00:43:42,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-15 00:43:42,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-15 00:43:42,880 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-15 00:43:42,880 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-15 00:43:42,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-15 00:43:42,886 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2022-12-15 00:43:42,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-15 00:43:42,886 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2022-12-15 00:43:43,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-15 00:43:43,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-15 00:43:43,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-15 00:43:43,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-15 00:43:43,138 INFO L275 PluginConnector]: CDTParser initialized [2022-12-15 00:43:43,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/pthread/singleton.i [2022-12-15 00:43:45,703 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-15 00:43:45,889 INFO L351 CDTParser]: Found 1 translation units. [2022-12-15 00:43:45,889 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/sv-benchmarks/c/pthread/singleton.i [2022-12-15 00:43:45,899 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/data/24f33f44f/2ed71d23f74b4825935e778aa6cff6e9/FLAG13889175d [2022-12-15 00:43:45,909 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/data/24f33f44f/2ed71d23f74b4825935e778aa6cff6e9 [2022-12-15 00:43:45,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-15 00:43:45,912 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-15 00:43:45,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-15 00:43:45,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-15 00:43:45,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-15 00:43:45,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:43:45" (1/1) ... [2022-12-15 00:43:45,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a20ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:45, skipping insertion in model container [2022-12-15 00:43:45,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 12:43:45" (1/1) ... [2022-12-15 00:43:45,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-15 00:43:45,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-15 00:43:46,091 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-15 00:43:46,349 WARN L237 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_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-12-15 00:43:46,351 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-15 00:43:46,352 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-15 00:43:46,353 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-15 00:43:46,354 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-15 00:43:46,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-15 00:43:46,377 INFO L203 MainTranslator]: Completed pre-run [2022-12-15 00:43:46,388 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-12-15 00:43:46,402 WARN L237 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_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/sv-benchmarks/c/pthread/singleton.i[55547,55560] [2022-12-15 00:43:46,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-15 00:43:46,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-15 00:43:46,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-15 00:43:46,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-15 00:43:46,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-15 00:43:46,450 INFO L208 MainTranslator]: Completed translation [2022-12-15 00:43:46,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46 WrapperNode [2022-12-15 00:43:46,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-15 00:43:46,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-15 00:43:46,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-15 00:43:46,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-15 00:43:46,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,488 INFO L138 Inliner]: procedures = 328, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2022-12-15 00:43:46,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-15 00:43:46,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-15 00:43:46,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-15 00:43:46,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-15 00:43:46,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,508 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-15 00:43:46,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-15 00:43:46,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-15 00:43:46,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-15 00:43:46,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-15 00:43:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/z3 [2022-12-15 00:43:46,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-15 00:43:46,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-15 00:43:46,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-15 00:43:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-15 00:43:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-15 00:43:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-15 00:43:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-12-15 00:43:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-15 00:43:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-15 00:43:46,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-15 00:43:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-15 00:43:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2022-12-15 00:43:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2022-12-15 00:43:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-15 00:43:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-15 00:43:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-15 00:43:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-15 00:43:46,580 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-15 00:43:46,580 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-15 00:43:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-15 00:43:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-15 00:43:46,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-15 00:43:46,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-15 00:43:46,582 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-15 00:43:46,701 INFO L235 CfgBuilder]: Building ICFG [2022-12-15 00:43:46,703 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-15 00:43:46,908 INFO L276 CfgBuilder]: Performing block encoding [2022-12-15 00:43:46,915 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-15 00:43:46,915 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-15 00:43:46,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:43:46 BoogieIcfgContainer [2022-12-15 00:43:46,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-15 00:43:46,919 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-15 00:43:46,919 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-15 00:43:46,927 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-15 00:43:46,927 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 12:43:46" (1/1) ... [2022-12-15 00:43:46,928 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck has thrown an exception: java.lang.UnsupportedOperationException: Concurrent programs are currently unsupported at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.initialize(CodeCheckObserver.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.process(CodeCheckObserver.java:358) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.CFGWalker.runObserver(CFGWalker.java:57) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-15 00:43:46,932 INFO L158 Benchmark]: Toolchain (without parser) took 1018.52ms. Allocated memory is still 71.3MB. Free memory was 47.1MB in the beginning and 28.1MB in the end (delta: 19.0MB). Peak memory consumption was 19.9MB. Max. memory is 16.1GB. [2022-12-15 00:43:46,932 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory is still 33.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-15 00:43:46,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.68ms. Allocated memory is still 71.3MB. Free memory was 46.9MB in the beginning and 30.2MB in the end (delta: 16.7MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. [2022-12-15 00:43:46,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.57ms. Allocated memory is still 71.3MB. Free memory was 30.2MB in the beginning and 48.5MB in the end (delta: -18.3MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-12-15 00:43:46,934 INFO L158 Benchmark]: Boogie Preprocessor took 22.74ms. Allocated memory is still 71.3MB. Free memory was 48.5MB in the beginning and 46.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-15 00:43:46,935 INFO L158 Benchmark]: RCFGBuilder took 405.78ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 28.9MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-15 00:43:46,935 INFO L158 Benchmark]: CodeCheck took 11.32ms. Allocated memory is still 71.3MB. Free memory was 28.9MB in the beginning and 28.1MB in the end (delta: 846.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-15 00:43:46,939 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - ExceptionOrErrorResult: UnsupportedOperationException: Concurrent programs are currently unsupported de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: UnsupportedOperationException: Concurrent programs are currently unsupported: de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck.CodeCheckObserver.initialize(CodeCheckObserver.java:173) * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 54.5MB. Free memory is still 33.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.68ms. Allocated memory is still 71.3MB. Free memory was 46.9MB in the beginning and 30.2MB in the end (delta: 16.7MB). Peak memory consumption was 17.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.57ms. Allocated memory is still 71.3MB. Free memory was 30.2MB in the beginning and 48.5MB in the end (delta: -18.3MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.74ms. Allocated memory is still 71.3MB. Free memory was 48.5MB in the beginning and 46.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 405.78ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 28.9MB in the end (delta: 17.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * CodeCheck took 11.32ms. Allocated memory is still 71.3MB. Free memory was 28.9MB in the beginning and 28.1MB in the end (delta: 846.1kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-15 00:43:46,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2689a583-c3e7-41fc-bd6f-69cfbf8adb3a/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Concurrent programs are currently unsupported