./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/triangular-longer-2.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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- 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 [2022-12-14 16:24:38,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:24:38,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:24:38,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:24:38,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:24:38,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:24:38,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:24:38,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:24:38,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:24:38,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:24:38,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:24:38,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:24:38,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:24:38,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:24:38,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:24:38,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:24:38,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:24:38,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:24:38,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:24:38,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:24:38,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:24:38,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:24:38,252 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:24:38,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:24:38,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:24:38,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:24:38,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:24:38,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:24:38,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:24:38,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:24:38,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:24:38,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:24:38,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:24:38,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:24:38,261 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:24:38,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:24:38,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:24:38,262 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:24:38,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:24:38,263 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:24:38,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:24:38,265 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/config/svcomp-Overflow-32bit-Kojak_Default.epf [2022-12-14 16:24:38,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:24:38,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:24:38,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:24:38,286 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 16:24:38,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 16:24:38,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 16:24:38,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:24:38,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:24:38,287 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 16:24:38,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:24:38,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:24:38,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:24:38,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:24:38,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:24:38,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:24:38,288 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 16:24:38,288 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:24:38,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:24:38,289 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:24:38,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:24:38,289 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 16:24:38,289 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 16:24:38,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:24:38,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 16:24:38,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:24:38,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:24:38,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:24:38,290 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 16:24:38,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:24:38,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:24:38,290 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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2022-12-14 16:24:38,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:24:38,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:24:38,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:24:38,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:24:38,492 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:24:38,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2022-12-14 16:24:41,134 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:24:41,336 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:24:41,336 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/sv-benchmarks/c/pthread/triangular-longer-2.i [2022-12-14 16:24:41,353 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/data/a3552e4c5/0c1d0d72696547579a61bc5edc95d8c6/FLAG1a6af431a [2022-12-14 16:24:41,367 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/data/a3552e4c5/0c1d0d72696547579a61bc5edc95d8c6 [2022-12-14 16:24:41,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:24:41,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:24:41,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:24:41,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:24:41,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:24:41,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d63298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41, skipping insertion in model container [2022-12-14 16:24:41,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:24:41,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:24:41,694 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:41,695 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:41,697 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:41,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:41,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:41,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:41,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:41,703 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:41,704 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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-12-14 16:24:41,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:24:41,711 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:24:41,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:41,734 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:41,735 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:41,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:41,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:41,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:41,738 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:41,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:41,739 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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-12-14 16:24:41,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:24:41,761 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:24:41,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41 WrapperNode [2022-12-14 16:24:41,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:24:41,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:24:41,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:24:41,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:24:41,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,791 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-14 16:24:41,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:24:41,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:24:41,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:24:41,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:24:41,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,806 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:24:41,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:24:41,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:24:41,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:24:41,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:41" (1/1) ... [2022-12-14 16:24:41,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 16:24:41,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 16:24:41,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 16:24:41,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 16:24:41,881 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-14 16:24:41,881 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-14 16:24:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 16:24:41,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:24:41,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:24:41,883 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 16:24:41,981 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:24:41,982 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:24:42,123 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:24:42,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:24:42,147 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 16:24:42,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:24:42 BoogieIcfgContainer [2022-12-14 16:24:42,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:24:42,151 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 16:24:42,151 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 16:24:42,161 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 16:24:42,161 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:24:42" (1/1) ... [2022-12-14 16:24:42,162 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) [2022-12-14 16:24:42,165 INFO L158 Benchmark]: Toolchain (without parser) took 793.92ms. Allocated memory is still 146.8MB. Free memory was 100.5MB in the beginning and 105.9MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:24:42,166 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 100.7MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:24:42,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.99ms. Allocated memory is still 146.8MB. Free memory was 100.2MB in the beginning and 80.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 16:24:42,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.36ms. Allocated memory is still 146.8MB. Free memory was 80.2MB in the beginning and 78.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:24:42,168 INFO L158 Benchmark]: Boogie Preprocessor took 24.15ms. Allocated memory is still 146.8MB. Free memory was 78.1MB in the beginning and 118.4MB in the end (delta: -40.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-12-14 16:24:42,168 INFO L158 Benchmark]: RCFGBuilder took 333.68ms. Allocated memory is still 146.8MB. Free memory was 118.4MB in the beginning and 106.9MB in the end (delta: 11.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2022-12-14 16:24:42,169 INFO L158 Benchmark]: CodeCheck took 13.35ms. Allocated memory is still 146.8MB. Free memory was 106.9MB in the beginning and 105.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:24:42,172 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 0.11ms. Allocated memory is still 100.7MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.99ms. Allocated memory is still 146.8MB. Free memory was 100.2MB in the beginning and 80.2MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.36ms. Allocated memory is still 146.8MB. Free memory was 80.2MB in the beginning and 78.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.15ms. Allocated memory is still 146.8MB. Free memory was 78.1MB in the beginning and 118.4MB in the end (delta: -40.3MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * RCFGBuilder took 333.68ms. Allocated memory is still 146.8MB. Free memory was 118.4MB in the beginning and 106.9MB in the end (delta: 11.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * CodeCheck took 13.35ms. Allocated memory is still 146.8MB. Free memory was 106.9MB in the beginning and 105.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 16:24:42,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 --- 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 [2022-12-14 16:24:43,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:24:43,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:24:43,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:24:43,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:24:43,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:24:43,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:24:43,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:24:43,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:24:43,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:24:43,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:24:43,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:24:43,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:24:43,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:24:43,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:24:43,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:24:43,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:24:43,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:24:43,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:24:43,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:24:43,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:24:43,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:24:43,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:24:43,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:24:43,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:24:43,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:24:43,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:24:43,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:24:43,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:24:43,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:24:43,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:24:43,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:24:43,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:24:43,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:24:43,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:24:43,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:24:43,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:24:43,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:24:43,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:24:43,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:24:43,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:24:43,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/config/svcomp-Overflow-32bit-Kojak_Bitvector.epf [2022-12-14 16:24:43,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:24:43,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:24:43,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:24:43,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 16:24:43,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 16:24:43,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 16:24:43,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:24:43,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:24:43,944 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 16:24:43,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:24:43,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:24:43,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:24:43,945 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:24:43,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:24:43,945 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 16:24:43,945 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 16:24:43,945 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 16:24:43,946 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 16:24:43,946 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:24:43,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:24:43,946 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:24:43,946 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:24:43,947 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 16:24:43,947 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 16:24:43,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:24:43,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 16:24:43,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:24:43,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:24:43,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:24:43,948 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 16:24:43,948 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 16:24:43,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:24:43,948 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2022-12-14 16:24:43,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 16:24:43,949 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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 647bb9f2bc4e44b8324ce986a0773d034e56e6ec110a9fd5233f5c8c0dbbeb10 [2022-12-14 16:24:44,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:24:44,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:24:44,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:24:44,194 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:24:44,194 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:24:44,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/pthread/triangular-longer-2.i [2022-12-14 16:24:46,812 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:24:46,969 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:24:46,970 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/sv-benchmarks/c/pthread/triangular-longer-2.i [2022-12-14 16:24:46,978 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/data/a35ec76f7/45e8cabbdd844ab98aae4e1e97994543/FLAG687b911db [2022-12-14 16:24:46,992 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/data/a35ec76f7/45e8cabbdd844ab98aae4e1e97994543 [2022-12-14 16:24:46,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:24:46,996 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:24:46,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:24:46,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:24:47,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:24:47,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:24:46" (1/1) ... [2022-12-14 16:24:47,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ece3ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47, skipping insertion in model container [2022-12-14 16:24:47,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:24:46" (1/1) ... [2022-12-14 16:24:47,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:24:47,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:24:47,331 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:47,332 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:47,336 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:47,337 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:47,346 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:47,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:47,349 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:47,350 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:47,351 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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-12-14 16:24:47,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:24:47,364 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:24:47,396 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:47,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:47,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:47,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:47,401 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:47,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:47,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-14 16:24:47,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-14 16:24:47,404 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_a554acf2-1d58-48c7-b04d-de7a15aa24dc/sv-benchmarks/c/pthread/triangular-longer-2.i[30963,30976] [2022-12-14 16:24:47,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:24:47,439 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:24:47,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47 WrapperNode [2022-12-14 16:24:47,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:24:47,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:24:47,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:24:47,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:24:47,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,478 INFO L138 Inliner]: procedures = 172, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 48 [2022-12-14 16:24:47,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:24:47,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:24:47,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:24:47,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:24:47,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,498 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:24:47,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:24:47,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:24:47,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:24:47,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 16:24:47,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 16:24:47,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 16:24:47,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 16:24:47,565 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-14 16:24:47,565 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-14 16:24:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-14 16:24:47,566 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-14 16:24:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-14 16:24:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:24:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 16:24:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 16:24:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 16:24:47,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 16:24:47,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-14 16:24:47,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:24:47,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:24:47,568 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 16:24:47,682 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:24:47,684 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:24:47,855 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:24:47,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:24:47,872 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 16:24:47,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:24:47 BoogieIcfgContainer [2022-12-14 16:24:47,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:24:47,879 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 16:24:47,879 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 16:24:47,886 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 16:24:47,887 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:24:47" (1/1) ... [2022-12-14 16:24:47,887 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) [2022-12-14 16:24:47,890 INFO L158 Benchmark]: Toolchain (without parser) took 893.91ms. Allocated memory is still 60.8MB. Free memory was 40.4MB in the beginning and 37.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.5MB. Max. memory is 16.1GB. [2022-12-14 16:24:47,890 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 48.2MB. Free memory was 26.4MB in the beginning and 26.4MB in the end (delta: 54.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:24:47,891 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.77ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 32.0MB in the end (delta: 8.1MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2022-12-14 16:24:47,891 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.85ms. Allocated memory is still 60.8MB. Free memory was 31.8MB in the beginning and 29.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:24:47,891 INFO L158 Benchmark]: Boogie Preprocessor took 22.48ms. Allocated memory is still 60.8MB. Free memory was 29.8MB in the beginning and 28.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:24:47,892 INFO L158 Benchmark]: RCFGBuilder took 371.96ms. Allocated memory is still 60.8MB. Free memory was 28.0MB in the beginning and 25.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-12-14 16:24:47,892 INFO L158 Benchmark]: CodeCheck took 9.83ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 37.3MB in the end (delta: 783.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:24:47,894 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 0.14ms. Allocated memory is still 48.2MB. Free memory was 26.4MB in the beginning and 26.4MB in the end (delta: 54.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 442.77ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 32.0MB in the end (delta: 8.1MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.85ms. Allocated memory is still 60.8MB. Free memory was 31.8MB in the beginning and 29.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.48ms. Allocated memory is still 60.8MB. Free memory was 29.8MB in the beginning and 28.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 371.96ms. Allocated memory is still 60.8MB. Free memory was 28.0MB in the beginning and 25.0MB in the end (delta: 2.9MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * CodeCheck took 9.83ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 37.3MB in the end (delta: 783.6kB). There was no memory consumed. Max. memory is 16.1GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 16:24:47,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a554acf2-1d58-48c7-b04d-de7a15aa24dc/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