./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-wmm/mix017_power.opt_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix017_power.opt_rmo.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --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 c394bf0b454616c76d3ba114fe7f9b161b2a3a1a85dec23beec05d3a021c1c91 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 05:34:57,290 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 05:34:57,362 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-19 05:34:57,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 05:34:57,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 05:34:57,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 05:34:57,394 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 05:34:57,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 05:34:57,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 05:34:57,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 05:34:57,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 05:34:57,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 05:34:57,397 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 05:34:57,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 05:34:57,397 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 05:34:57,398 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 05:34:57,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 05:34:57,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 05:34:57,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 05:34:57,404 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 05:34:57,404 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 05:34:57,405 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 05:34:57,405 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-19 05:34:57,405 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 05:34:57,405 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 05:34:57,406 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 05:34:57,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 05:34:57,407 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 05:34:57,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 05:34:57,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 05:34:57,408 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 05:34:57,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:34:57,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 05:34:57,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 05:34:57,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 05:34:57,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 05:34:57,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 05:34:57,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 05:34:57,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 05:34:57,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 05:34:57,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 05:34:57,412 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c394bf0b454616c76d3ba114fe7f9b161b2a3a1a85dec23beec05d3a021c1c91 [2024-11-19 05:34:57,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 05:34:57,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 05:34:57,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 05:34:57,725 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 05:34:57,726 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 05:34:57,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix017_power.opt_rmo.opt.i [2024-11-19 05:34:59,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 05:34:59,367 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 05:34:59,368 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix017_power.opt_rmo.opt.i [2024-11-19 05:34:59,390 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266d5f24c/cba978a7ca754720ada06addcadeba48/FLAG8bdca3ed2 [2024-11-19 05:34:59,698 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/266d5f24c/cba978a7ca754720ada06addcadeba48 [2024-11-19 05:34:59,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 05:34:59,702 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 05:34:59,703 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 05:34:59,704 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 05:34:59,710 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 05:34:59,711 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:34:59" (1/1) ... [2024-11-19 05:34:59,712 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec144a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:34:59, skipping insertion in model container [2024-11-19 05:34:59,712 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:34:59" (1/1) ... [2024-11-19 05:34:59,760 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 05:35:00,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:35:00,216 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 05:35:00,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 05:35:00,354 INFO L204 MainTranslator]: Completed translation [2024-11-19 05:35:00,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00 WrapperNode [2024-11-19 05:35:00,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 05:35:00,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 05:35:00,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 05:35:00,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 05:35:00,363 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,436 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 507 [2024-11-19 05:35:00,437 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 05:35:00,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 05:35:00,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 05:35:00,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 05:35:00,448 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,457 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,477 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,494 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,502 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,516 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 05:35:00,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 05:35:00,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 05:35:00,523 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 05:35:00,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (1/1) ... [2024-11-19 05:35:00,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 05:35:00,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 05:35:00,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 05:35:00,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 05:35:00,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 05:35:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 05:35:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-19 05:35:00,627 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-19 05:35:00,627 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-19 05:35:00,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-19 05:35:00,628 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-19 05:35:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-19 05:35:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-19 05:35:00,629 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-19 05:35:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 05:35:00,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 05:35:00,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 05:35:00,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 05:35:00,633 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 05:35:00,871 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 05:35:00,873 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 05:35:02,282 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 05:35:02,282 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 05:35:06,765 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 05:35:06,765 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 05:35:06,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:35:06 BoogieIcfgContainer [2024-11-19 05:35:06,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 05:35:06,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 05:35:06,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 05:35:06,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 05:35:06,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:34:59" (1/3) ... [2024-11-19 05:35:06,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b450618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:35:06, skipping insertion in model container [2024-11-19 05:35:06,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:35:00" (2/3) ... [2024-11-19 05:35:06,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b450618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:35:06, skipping insertion in model container [2024-11-19 05:35:06,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:35:06" (3/3) ... [2024-11-19 05:35:06,777 INFO L112 eAbstractionObserver]: Analyzing ICFG mix017_power.opt_rmo.opt.i [2024-11-19 05:35:06,796 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 05:35:06,796 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 228 error locations. [2024-11-19 05:35:06,797 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 05:35:07,225 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 05:35:07,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 361 transitions, 738 flow [2024-11-19 05:35:07,462 INFO L124 PetriNetUnfolderBase]: 3/357 cut-off events. [2024-11-19 05:35:07,463 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:35:07,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 357 events. 3/357 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 1807 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 318. Up to 2 conditions per place. [2024-11-19 05:35:07,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 361 transitions, 738 flow [2024-11-19 05:35:07,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 357 transitions, 726 flow [2024-11-19 05:35:07,526 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 05:35:07,535 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34d90bc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 05:35:07,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 422 error locations. [2024-11-19 05:35:07,543 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 05:35:07,544 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2024-11-19 05:35:07,544 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:35:07,544 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:35:07,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:35:07,546 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 418 more)] === [2024-11-19 05:35:07,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:35:07,551 INFO L85 PathProgramCache]: Analyzing trace with hash 96348429, now seen corresponding path program 1 times [2024-11-19 05:35:07,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:35:07,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386088710] [2024-11-19 05:35:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:35:07,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:35:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:35:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:35:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:35:07,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386088710] [2024-11-19 05:35:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386088710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:35:07,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:35:07,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 05:35:07,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429807712] [2024-11-19 05:35:07,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:35:07,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 05:35:07,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:35:07,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 05:35:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 05:35:07,898 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 361 [2024-11-19 05:35:07,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 357 transitions, 726 flow. Second operand has 2 states, 2 states have (on average 110.0) internal successors, (220), 2 states have internal predecessors, (220), 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) [2024-11-19 05:35:07,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:35:07,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 361 [2024-11-19 05:35:07,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:35:15,688 INFO L124 PetriNetUnfolderBase]: 5748/16277 cut-off events. [2024-11-19 05:35:15,688 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-19 05:35:15,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24253 conditions, 16277 events. 5748/16277 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 189265 event pairs, 5748 based on Foata normal form. 1391/16550 useless extension candidates. Maximal degree in co-relation 24199. Up to 7769 conditions per place. [2024-11-19 05:35:15,842 INFO L140 encePairwiseOnDemand]: 132/361 looper letters, 22 selfloop transitions, 0 changer transitions 0/126 dead transitions. [2024-11-19 05:35:15,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 126 transitions, 308 flow [2024-11-19 05:35:15,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 05:35:15,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 05:35:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 469 transitions. [2024-11-19 05:35:15,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.649584487534626 [2024-11-19 05:35:15,865 INFO L175 Difference]: Start difference. First operand has 367 places, 357 transitions, 726 flow. Second operand 2 states and 469 transitions. [2024-11-19 05:35:15,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 126 transitions, 308 flow [2024-11-19 05:35:15,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 304 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 05:35:15,872 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 260 flow [2024-11-19 05:35:15,874 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=260, PETRI_PLACES=136, PETRI_TRANSITIONS=126} [2024-11-19 05:35:15,878 INFO L277 CegarLoopForPetriNet]: 367 programPoint places, -231 predicate places. [2024-11-19 05:35:15,881 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 260 flow [2024-11-19 05:35:15,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.0) internal successors, (220), 2 states have internal predecessors, (220), 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) [2024-11-19 05:35:15,881 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:35:15,881 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:35:15,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 05:35:15,882 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 418 more)] === [2024-11-19 05:35:15,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:35:15,883 INFO L85 PathProgramCache]: Analyzing trace with hash 228102171, now seen corresponding path program 1 times [2024-11-19 05:35:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:35:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673118461] [2024-11-19 05:35:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:35:15,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:35:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:35:16,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:35:16,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:35:16,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673118461] [2024-11-19 05:35:16,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673118461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:35:16,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:35:16,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:35:16,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408829194] [2024-11-19 05:35:16,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:35:16,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:35:16,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:35:16,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:35:16,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:35:16,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 361 [2024-11-19 05:35:16,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 126 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2024-11-19 05:35:16,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:35:16,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 361 [2024-11-19 05:35:16,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 05:35:24,477 INFO L124 PetriNetUnfolderBase]: 8756/23388 cut-off events. [2024-11-19 05:35:24,477 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 05:35:24,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35329 conditions, 23388 events. 8756/23388 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 266596 event pairs, 2740 based on Foata normal form. 0/21906 useless extension candidates. Maximal degree in co-relation 35326. Up to 7936 conditions per place. [2024-11-19 05:35:24,632 INFO L140 encePairwiseOnDemand]: 359/361 looper letters, 38 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2024-11-19 05:35:24,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 140 transitions, 366 flow [2024-11-19 05:35:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 05:35:24,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 05:35:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2024-11-19 05:35:24,638 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33056325023084027 [2024-11-19 05:35:24,638 INFO L175 Difference]: Start difference. First operand has 136 places, 126 transitions, 260 flow. Second operand 3 states and 358 transitions. [2024-11-19 05:35:24,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 140 transitions, 366 flow [2024-11-19 05:35:24,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 140 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 05:35:24,643 INFO L231 Difference]: Finished difference. Result has 137 places, 125 transitions, 260 flow [2024-11-19 05:35:24,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=137, PETRI_TRANSITIONS=125} [2024-11-19 05:35:24,645 INFO L277 CegarLoopForPetriNet]: 367 programPoint places, -230 predicate places. [2024-11-19 05:35:24,645 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 125 transitions, 260 flow [2024-11-19 05:35:24,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2024-11-19 05:35:24,646 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 05:35:24,646 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 05:35:24,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 05:35:24,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONDATA_RACE === [P0Err0ASSERT_VIOLATIONDATA_RACE, P0Err1ASSERT_VIOLATIONDATA_RACE, P0Err2ASSERT_VIOLATIONDATA_RACE, P0Err3ASSERT_VIOLATIONDATA_RACE (and 418 more)] === [2024-11-19 05:35:24,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 05:35:24,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2028779549, now seen corresponding path program 1 times [2024-11-19 05:35:24,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 05:35:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124643540] [2024-11-19 05:35:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 05:35:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 05:35:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 05:35:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 05:35:24,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 05:35:24,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124643540] [2024-11-19 05:35:24,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124643540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 05:35:24,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 05:35:24,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 05:35:24,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786913539] [2024-11-19 05:35:24,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 05:35:24,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 05:35:24,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 05:35:24,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 05:35:24,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 05:35:24,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 361 [2024-11-19 05:35:24,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 125 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 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) [2024-11-19 05:35:24,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 05:35:24,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 361 [2024-11-19 05:35:24,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand