./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-wmm/mix010.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix010.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7921b56e8fb93a995ae84202df419b3b13e0137d1aac925ef124b626f5414f7b --- 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 [2022-12-13 14:51:06,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:51:06,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:51:06,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:51:06,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:51:06,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:51:06,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:51:06,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:51:06,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:51:06,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:51:06,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:51:06,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:51:06,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:51:06,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:51:06,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:51:06,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:51:06,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:51:06,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:51:06,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:51:06,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:51:06,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:51:06,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:51:06,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:51:06,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:51:06,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:51:06,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:51:06,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:51:06,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:51:06,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:51:06,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:51:06,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:51:06,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:51:06,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:51:06,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:51:06,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:51:06,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:51:06,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:51:06,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:51:06,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:51:06,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:51:06,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:51:06,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-12-13 14:51:06,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:51:06,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:51:06,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:51:06,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:51:06,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:51:06,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:51:06,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:51:06,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:51:06,088 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:51:06,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:51:06,088 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:51:06,088 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 14:51:06,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:51:06,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:51:06,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:51:06,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:51:06,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:51:06,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:51:06,089 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-12-13 14:51:06,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:51:06,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:51:06,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:51:06,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:51:06,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:51:06,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:51:06,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:51:06,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:51:06,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:51:06,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:51:06,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:51:06,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:51:06,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:51:06,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:51:06,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:51:06,092 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:51:06,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:51:06,092 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:51:06,092 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7921b56e8fb93a995ae84202df419b3b13e0137d1aac925ef124b626f5414f7b [2022-12-13 14:51:06,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:51:06,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:51:06,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:51:06,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:51:06,339 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:51:06,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread-wmm/mix010.oepc.i [2022-12-13 14:51:08,867 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:51:09,083 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:51:09,084 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/sv-benchmarks/c/pthread-wmm/mix010.oepc.i [2022-12-13 14:51:09,096 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/data/b3a661ca4/d9f7755a94854745a783fe61f625ab67/FLAGb7da4cef9 [2022-12-13 14:51:09,110 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/data/b3a661ca4/d9f7755a94854745a783fe61f625ab67 [2022-12-13 14:51:09,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:51:09,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:51:09,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:51:09,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:51:09,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:51:09,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147e3d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09, skipping insertion in model container [2022-12-13 14:51:09,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:51:09,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:51:09,283 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_2112cad3-a217-4e33-98f0-a7f7f8a49586/sv-benchmarks/c/pthread-wmm/mix010.oepc.i[945,958] [2022-12-13 14:51:09,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,379 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,380 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,383 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,384 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,385 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,387 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,391 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,392 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,409 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,409 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:51:09,428 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:51:09,436 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_2112cad3-a217-4e33-98f0-a7f7f8a49586/sv-benchmarks/c/pthread-wmm/mix010.oepc.i[945,958] [2022-12-13 14:51:09,450 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,459 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,462 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,463 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,464 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,472 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,473 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,475 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 14:51:09,483 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 14:51:09,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:51:09,504 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:51:09,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09 WrapperNode [2022-12-13 14:51:09,504 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:51:09,505 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:51:09,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:51:09,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:51:09,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,547 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 500 [2022-12-13 14:51:09,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:51:09,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:51:09,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:51:09,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:51:09,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,579 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:51:09,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:51:09,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:51:09,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:51:09,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (1/1) ... [2022-12-13 14:51:09,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:51:09,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:51:09,610 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:51:09,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2112cad3-a217-4e33-98f0-a7f7f8a49586/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:51:09,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:51:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 14:51:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:51:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:51:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:51:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-13 14:51:09,654 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-13 14:51:09,654 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-13 14:51:09,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-13 14:51:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-13 14:51:09,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-13 14:51:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:51:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 14:51:09,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:51:09,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:51:09,657 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:51:09,811 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:51:09,813 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:51:10,728 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:55:15,183 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:55:15,184 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 14:55:15,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:55:15 BoogieIcfgContainer [2022-12-13 14:55:15,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:55:15,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:55:15,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:55:15,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:55:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:51:09" (1/3) ... [2022-12-13 14:55:15,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751fd3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:55:15, skipping insertion in model container [2022-12-13 14:55:15,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:51:09" (2/3) ... [2022-12-13 14:55:15,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751fd3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:55:15, skipping insertion in model container [2022-12-13 14:55:15,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:55:15" (3/3) ... [2022-12-13 14:55:15,192 INFO L112 eAbstractionObserver]: Analyzing ICFG mix010.oepc.i [2022-12-13 14:55:15,199 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:55:15,206 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:55:15,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 252 error locations. [2022-12-13 14:55:15,206 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:55:28,839 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-13 14:55:28,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 384 places, 376 transitions, 767 flow [2022-12-13 14:55:49,379 INFO L130 PetriNetUnfolder]: 2/373 cut-off events. [2022-12-13 14:55:49,380 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:55:49,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 373 events. 2/373 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 2045 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-12-13 14:55:49,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 384 places, 376 transitions, 767 flow [2022-12-13 14:55:49,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 381 places, 373 transitions, 755 flow [2022-12-13 14:55:49,406 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:55:49,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 373 transitions, 755 flow [2022-12-13 14:55:49,415 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 373 transitions, 755 flow [2022-12-13 14:55:49,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 373 transitions, 755 flow [2022-12-13 14:56:06,272 INFO L130 PetriNetUnfolder]: 2/373 cut-off events. [2022-12-13 14:56:06,273 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:56:06,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 373 events. 2/373 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 2052 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-12-13 14:56:06,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 70136 [2022-12-13 14:56:12,679 INFO L134 LiptonReduction]: Checked pairs total: 673678 [2022-12-13 14:56:12,679 INFO L136 LiptonReduction]: Total number of compositions: 149 [2022-12-13 14:56:12,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:56:12,695 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@77f1e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:56:12,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 469 error locations. [2022-12-13 14:56:12,697 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2022-12-13 14:56:12,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 14:56:12,697 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:56:12,698 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 14:56:12,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err15ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 465 more)] === [2022-12-13 14:56:12,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:56:12,703 INFO L85 PathProgramCache]: Analyzing trace with hash 7552005, now seen corresponding path program 1 times [2022-12-13 14:56:12,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:56:12,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409888509] [2022-12-13 14:56:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:56:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:56:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:56:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:56:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:56:13,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409888509] [2022-12-13 14:56:13,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409888509] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:56:13,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:56:13,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:56:13,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723025098] [2022-12-13 14:56:13,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:56:13,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:56:13,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:56:13,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:56:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:56:13,440 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 525 [2022-12-13 14:56:13,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 276 transitions, 561 flow. Second operand has 2 states, 2 states have (on average 103.5) internal successors, (207), 2 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:56:13,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:56:13,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 525 [2022-12-13 14:56:13,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand