Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr ThermofluidStream_dev_ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion.conf.json loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo): time 0.0008345/0.0008345, allocations: 109.5 kB / 18.95 MB, free: 1.184 MB / 13.93 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo): time 0.0009501/0.0009501, allocations: 218.2 kB / 22.25 MB, free: 3.582 MB / 13.93 MB " [Timeout remaining time 180] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo): time 0.9136/0.9136, allocations: 230.6 MB / 256 MB, free: 9.621 MB / 202.7 MB " [Timeout remaining time 179] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream main/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream main/package.mo): time 0.6655/0.6655, allocations: 150.8 MB / 463.2 MB, free: 6.473 MB / 362.7 MB " [Timeout remaining time 179] Using package ThermofluidStream with version 1.3.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ThermofluidStream main/package.mo) Using package Modelica with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.1.0+maint.om/package.mo) Using package Complex with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.1.0+maint.om/package.mo) Using package ModelicaServices with version 4.1.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.1.0+maint.om/package.mo) Running command: "" <> buildModelFMU(ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion,fileNamePrefix="ThermofluidStream_dev_ThermofluidStream_Idealized_Examples_ClausiusRankine_Step9VaporQualityInversion",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion,fileNamePrefix="ThermofluidStream_dev_ThermofluidStream_Idealized_Examples_ClausiusRankine_Step9VaporQualityInversion",fmuType="me",version="2.0",platforms={"static"}) [Timeout 660] "Notification: Performance of FrontEnd - loaded program: time 0.001103/0.001103, allocations: 83.94 kB / 0.6392 GB, free: 32.58 MB / 490.7 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1368/0.1379, allocations: 88.08 MB / 0.7252 GB, free: 8.391 MB / 0.5417 GB Notification: Performance of NFInst.instantiate(ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion): time 0.04159/0.1794, allocations: 66.23 MB / 0.7899 GB, free: 5.938 MB / 0.6042 GB Notification: Performance of NFInst.instExpressions: time 0.02191/0.2014, allocations: 27.46 MB / 0.8167 GB, free: 10.39 MB / 0.6355 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.0008211/0.2022, allocations: 55.44 kB / 0.8167 GB, free: 10.34 MB / 0.6355 GB Notification: Performance of NFTyping.typeComponents: time 0.001321/0.2035, allocations: 0.6866 MB / 0.8174 GB, free: 9.645 MB / 0.6355 GB Notification: Performance of NFTyping.typeBindings: time 0.01696/0.2205, allocations: 7.677 MB / 0.8249 GB, free: 1.965 MB / 0.6355 GB Notification: Performance of NFTyping.typeClassSections: time 0.296/0.5164, allocations: 2.041 MB / 0.8269 GB, free: 10.18 MB / 0.6355 GB Notification: Performance of NFFlatten.flatten: time 0.002508/0.519, allocations: 2.094 MB / 0.8289 GB, free: 10.18 MB / 0.6355 GB Notification: Performance of NFFlatten.resolveConnections: time 0.0003295/0.5193, allocations: 247.5 kB / 0.8292 GB, free: 10.11 MB / 0.6355 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01102/0.5303, allocations: 8.84 MB / 0.8378 GB, free: 7.777 MB / 0.6355 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001023/0.5313, allocations: 0.6832 MB / 0.8385 GB, free: 7.777 MB / 0.6355 GB Notification: Performance of NFPackage.collectConstants: time 0.0001378/0.5315, allocations: 93.66 kB / 0.8386 GB, free: 7.777 MB / 0.6355 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01433/0.5458, allocations: 10.75 MB / 0.8491 GB, free: 7.75 MB / 0.6355 GB Notification: Performance of NFScalarize.scalarize: time 0.0001929/0.546, allocations: 258.6 kB / 0.8493 GB, free: 7.75 MB / 0.6355 GB Notification: Performance of NFVerifyModel.verify: time 0.0006089/0.5466, allocations: 0.6018 MB / 0.8499 GB, free: 7.66 MB / 0.6355 GB Notification: Performance of NFConvertDAE.convert: time 0.01037/0.557, allocations: 8.219 MB / 0.8579 GB, free: 7.094 MB / 0.6355 GB Notification: Performance of FrontEnd - DAE generated: time 3.657e-06/0.557, allocations: 0 / 0.8579 GB, free: 7.094 MB / 0.6355 GB Notification: Performance of FrontEnd: time 1.853e-06/0.557, allocations: 0 / 0.8579 GB, free: 7.094 MB / 0.6355 GB Notification: Performance of Transformations before backend: time 1.546e-05/0.557, allocations: 1.906 kB / 0.8579 GB, free: 7.094 MB / 0.6355 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 304 * Number of variables: 304 Notification: Performance of Generate backend data structure: time 0.004189/0.5612, allocations: 2.75 MB / 0.8606 GB, free: 5.758 MB / 0.6355 GB Notification: Performance of prepare preOptimizeDAE: time 4.094e-05/0.5612, allocations: 10.5 kB / 0.8606 GB, free: 5.758 MB / 0.6355 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001231/0.5613, allocations: 179.5 kB / 0.8608 GB, free: 5.715 MB / 0.6355 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001086/0.5624, allocations: 372.1 kB / 0.8611 GB, free: 5.621 MB / 0.6355 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0009216/0.5634, allocations: 0.8 MB / 0.8619 GB, free: 5.316 MB / 0.6355 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000105/0.5635, allocations: 201.6 kB / 0.8621 GB, free: 5.188 MB / 0.6355 GB Notification: Performance of preOpt expandDerOperator (simulation): time 9.31e-05/0.5636, allocations: 119.3 kB / 0.8622 GB, free: 5.188 MB / 0.6355 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001533/0.5651, allocations: 1.486 MB / 0.8637 GB, free: 4.754 MB / 0.6355 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.019e-05/0.5651, allocations: 6.5 kB / 0.8637 GB, free: 4.754 MB / 0.6355 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 5.753e-05/0.5652, allocations: 52.81 kB / 0.8637 GB, free: 4.75 MB / 0.6355 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.729e-05/0.5652, allocations: 32.5 kB / 0.8638 GB, free: 4.75 MB / 0.6355 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001348/0.5665, allocations: 1.012 MB / 0.8648 GB, free: 4.734 MB / 0.6355 GB Warning: The model contains alias variables with redundant start and/or conflicting nominal values. It is recommended to resolve the conflicts, because otherwise the system could be hard to solve. To print the conflicting alias sets and the chosen candidates please use -d=aliasConflicts. Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.003443/0.57, allocations: 4.984 MB / 0.8696 GB, free: 18.04 MB / 0.6511 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001212/0.5712, allocations: 0.8317 MB / 0.8704 GB, free: 18.01 MB / 0.6511 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0004087/0.5716, allocations: 377.5 kB / 0.8708 GB, free: 17.99 MB / 0.6511 GB Notification: Performance of preOpt evalFunc (simulation): time 0.06282/0.6344, allocations: 36.47 MB / 0.9064 GB, free: 11.94 MB / 0.6667 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.928e-05/0.6345, allocations: 44.41 kB / 0.9065 GB, free: 11.9 MB / 0.6667 GB Notification: Performance of pre-optimization done (n=85): time 3.236e-06/0.6345, allocations: 3.469 kB / 0.9065 GB, free: 11.9 MB / 0.6667 GB Notification: Performance of matching and sorting (n=85): time 0.002847/0.6373, allocations: 1.4 MB / 0.9078 GB, free: 10.82 MB / 0.6667 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.979e-05/0.6374, allocations: 90.11 kB / 0.9079 GB, free: 10.71 MB / 0.6667 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0008546/0.6382, allocations: 0.8859 MB / 0.9088 GB, free: 10.01 MB / 0.6667 GB Notification: Performance of collectPreVariables (initialization): time 4.128e-05/0.6382, allocations: 40.08 kB / 0.9088 GB, free: 9.973 MB / 0.6667 GB Notification: Performance of collectInitialEqns (initialization): time 0.000311/0.6386, allocations: 0.6245 MB / 0.9094 GB, free: 9.551 MB / 0.6667 GB Notification: Performance of collectInitialBindings (initialization): time 0.000429/0.639, allocations: 314.5 kB / 0.9097 GB, free: 9.289 MB / 0.6667 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001524/0.6391, allocations: 184.9 kB / 0.9099 GB, free: 9.176 MB / 0.6667 GB Notification: Performance of setup shared object (initialization): time 0.0001046/0.6392, allocations: 348 kB / 0.9102 GB, free: 8.848 MB / 0.6667 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0003088/0.6396, allocations: 248.5 kB / 0.9105 GB, free: 8.684 MB / 0.6667 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.000436/0.64, allocations: 0.5664 MB / 0.911 GB, free: 8.086 MB / 0.6667 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.0007979/0.6408, allocations: 0.8636 MB / 0.9119 GB, free: 7.367 MB / 0.6667 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.128e-06/0.6408, allocations: 0 / 0.9119 GB, free: 7.367 MB / 0.6667 GB Notification: Performance of matching and sorting (n=126) (initialization): time 0.001113/0.6419, allocations: 1.02 MB / 0.9129 GB, free: 6.629 MB / 0.6667 GB Notification: Performance of prepare postOptimizeDAE: time 2.054e-05/0.6419, allocations: 8 kB / 0.9129 GB, free: 6.621 MB / 0.6667 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.246e-05/0.6419, allocations: 12 kB / 0.9129 GB, free: 6.609 MB / 0.6667 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0005623/0.6425, allocations: 135.2 kB / 0.913 GB, free: 6.488 MB / 0.6667 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0004162/0.6429, allocations: 221.4 kB / 0.9132 GB, free: 6.297 MB / 0.6667 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0006837/0.6436, allocations: 1.733 MB / 0.9149 GB, free: 4.551 MB / 0.6667 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0004249/0.644, allocations: 109.7 kB / 0.915 GB, free: 4.457 MB / 0.6667 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 4.538e-05/0.6441, allocations: 46.62 kB / 0.9151 GB, free: 4.422 MB / 0.6667 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 42 * Number of states: 0 () * Number of discrete variables: 7 (superheater.outlet.state.phase,loopBreaker.outlet.state.phase,turbine.outlet.state.phase,condenser.outlet.state.phase,preheater.outlet.state.phase,boiler.outlet.state.phase,pump.outlet.state.phase) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (120): * Single equations (assignments): 117 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 1 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details (not torn): * Constant Jacobian (size): 0 systems * Linear Jacobian (size,density): 0 systems * Non-linear Jacobian (size): 1 system {1} * Without analytic Jacobian (size): 0 systems Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 2 systems {(1,4), (1,2)} Notification: Performance of prepare postOptimizeDAE: time 0.0003462/0.6444, allocations: 278.6 kB / 0.9153 GB, free: 4.234 MB / 0.6667 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0001022/0.6445, allocations: 127.2 kB / 0.9154 GB, free: 4.109 MB / 0.6667 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002426/0.6469, allocations: 3.067 MB / 0.9184 GB, free: 1.602 MB / 0.6667 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.245e-05/0.647, allocations: 39.94 kB / 0.9185 GB, free: 1.562 MB / 0.6667 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.141e-06/0.647, allocations: 0 / 0.9185 GB, free: 1.562 MB / 0.6667 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 7.555e-06/0.647, allocations: 3.984 kB / 0.9185 GB, free: 1.559 MB / 0.6667 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.00326/0.6502, allocations: 4.386 MB / 0.9228 GB, free: 13.18 MB / 0.6823 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 5.12e-06/0.6502, allocations: 3 kB / 0.9228 GB, free: 13.18 MB / 0.6823 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002802/0.6505, allocations: 130.1 kB / 0.9229 GB, free: 13.06 MB / 0.6823 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0006412/0.6512, allocations: 0.6147 MB / 0.9235 GB, free: 12.45 MB / 0.6823 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 3.408e-05/0.6512, allocations: 31.92 kB / 0.9235 GB, free: 12.41 MB / 0.6823 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001199/0.6524, allocations: 2.321 MB / 0.9258 GB, free: 10.02 MB / 0.6823 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.592e-06/0.6524, allocations: 0 / 0.9258 GB, free: 10.02 MB / 0.6823 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.002258/0.6547, allocations: 2.988 MB / 0.9287 GB, free: 7.051 MB / 0.6823 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0002567/0.6549, allocations: 242.3 kB / 0.9289 GB, free: 6.812 MB / 0.6823 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 7.641e-05/0.655, allocations: 31.83 kB / 0.929 GB, free: 6.781 MB / 0.6823 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0002381/0.6552, allocations: 39.91 kB / 0.929 GB, free: 6.742 MB / 0.6823 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 7.595e-05/0.6553, allocations: 60.88 kB / 0.9291 GB, free: 6.684 MB / 0.6823 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.688e-05/0.6553, allocations: 24 kB / 0.9291 GB, free: 6.66 MB / 0.6823 GB Notification: Performance of sorting global known variables: time 0.0005457/0.6559, allocations: 0.6711 MB / 0.9297 GB, free: 5.988 MB / 0.6823 GB Notification: Performance of sort global known variables: time 6e-08/0.6559, allocations: 3.938 kB / 0.9297 GB, free: 5.984 MB / 0.6823 GB Notification: Performance of remove unused functions: time 0.004487/0.6604, allocations: 1.851 MB / 0.9316 GB, free: 4.129 MB / 0.6823 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 1 (firstOrder.y) * Number of discrete variables: 18 ($cse1.phase,$cse1.region,$cse2.phase,$cse2.region,$cse3.phase,$cse3.region,$cse4.phase,$cse4.region,$cse5.phase,$cse5.region,$cse6.phase,$cse6.region,$cse9.phase,$cse9.region,$cse10.phase,$cse10.region,$cse11.region3boundary,$cse13.region3boundary) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (87): * Single equations (assignments): 76 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 8 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 3 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 3 systems {(1,1), (1,5), (1,3)} Notification: Performance of Backend phase and start with SimCode phase: time 0.007535/0.6679, allocations: 4.924 MB / 0.9364 GB, free: 15.39 MB / 0.698 GB Notification: Performance of simCode: created initialization part: time 0.001194/0.6691, allocations: 0.9989 MB / 0.9373 GB, free: 14.42 MB / 0.698 GB Notification: Performance of simCode: created event and clocks part: time 2.615e-06/0.6691, allocations: 0 / 0.9373 GB, free: 14.42 MB / 0.698 GB Notification: Performance of simCode: created simulation system equations: time 0.0005387/0.6696, allocations: 0.6159 MB / 0.9379 GB, free: 13.82 MB / 0.698 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001661/0.6713, allocations: 0.6422 MB / 0.9386 GB, free: 13.22 MB / 0.698 GB [/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelica/OMCompiler/Compiler/SimCode/SimCodeUtil.mo:10546:11-10546:220:writable] Error: Internal error Unexpected expression (should have been handled earlier, probably in the front-end. Unit/displayUnit expression is not a string literal: ThermofluidStream.Sensors.Internal.getTwoPhaseUnit(vaporQualitySensor.quantity) Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01009/0.6814, allocations: 9.754 MB / 0.9481 GB, free: 3.16 MB / 0.698 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004335/0.6818, allocations: 0.7149 MB / 0.9488 GB, free: 2.402 MB / 0.698 GB Notification: Performance of simCode: alias equations: time 0.0005627/0.6824, allocations: 337.3 kB / 0.9491 GB, free: 2.078 MB / 0.698 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004647/0.6829, allocations: 0.6398 MB / 0.9497 GB, free: 1.438 MB / 0.698 GB Notification: Performance of SimCode: time 8.52e-07/0.6829, allocations: 0 / 0.9497 GB, free: 1.438 MB / 0.698 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.1073/0.7901, allocations: 91.64 MB / 1.039 GB, free: 6.461 MB / 0.7917 GB Notification: Performance of buildModelFMU: Generate platform static: time 11.64/12.43, allocations: 6.984 kB / 1.039 GB, free: 6.457 MB / 0.7917 GB " [Timeout remaining time 647] (rm -f ThermofluidStream_dev_ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion.pipe ; mkfifo ThermofluidStream_dev_ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion.pipe ; head -c 1048576 < ThermofluidStream_dev_ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion.pipe >> ../files/ThermofluidStream_dev_ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator -r=ThermofluidStream_dev_ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion_res.mat --tempDir=temp_ThermofluidStream_dev_ThermofluidStream_Idealized_Examples_ClausiusRankine_Step9VaporQualityInversion_fmu --startTime=0 --stopTime=1 --stepSize=0.01 --timeout=1200 --tolerance=1e-06 ThermofluidStream_dev_ThermofluidStream_Idealized_Examples_ClausiusRankine_Step9VaporQualityInversion.fmu > ThermofluidStream_dev_ThermofluidStream.Idealized.Examples.ClausiusRankine.Step9VaporQualityInversion.pipe 2>&1) [Timeout 1260.0] [Calling os._exit(0), Time elapsed: 16.239118079654872] Failed to read output from testmodel.py, exit status != 0: 12.572327446192503 12.584787976 12.024954515 Calling exit ...