Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.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 0.001833/0.001833, allocations: 99.64 kB / 18.94 MB, free: 2.551 MB / 14.72 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 0.002404/0.002404, allocations: 216.5 kB / 22.25 MB, free: 4.855 MB / 14.72 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 1.454/1.454, allocations: 230.6 MB / 256 MB, free: 7.785 MB / 206.1 MB " [Timeout remaining time 178] loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.x/package.mo", uses=false) [Timeout 180] "Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.x/package.mo): time 2.676/2.676, allocations: 476 MB / 0.7699 GB, free: 4.73 MB / 0.6231 GB " [Timeout remaining time 177] Using package Buildings with version 11.1.1 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 11.1.1-maint.11.x/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(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11,fileNamePrefix="Buildings_11_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase11",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11,fileNamePrefix="Buildings_11_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase11",fmuType="me",version="2.0",platforms={"static"}) [Timeout 300] "Notification: Buildings requested package Modelica of version 4.0.0. Modelica 4.1.0 is used instead which states that it is fully compatible without conversion script needed. Notification: Performance of FrontEnd - loaded program: time 0.00215/0.00215, allocations: 69.92 kB / 1.117 GB, free: 41.14 MB / 0.9044 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3232/0.3253, allocations: 170 MB / 1.283 GB, free: 12.42 MB / 0.9825 GB Notification: Performance of NFInst.instantiate(Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11): time 0.1985/0.5238, allocations: 139.8 MB / 1.419 GB, free: 80 kB / 1.107 GB Notification: Performance of NFInst.instExpressions: time 0.02867/0.5525, allocations: 20.19 MB / 1.439 GB, free: 11.84 MB / 1.139 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.002023/0.5545, allocations: 87.31 kB / 1.439 GB, free: 11.75 MB / 1.139 GB Notification: Performance of NFTyping.typeComponents: time 0.002675/0.5572, allocations: 1.983 MB / 1.441 GB, free: 9.766 MB / 1.139 GB Notification: Performance of NFTyping.typeBindings: time 0.00243/0.5596, allocations: 1.413 MB / 1.442 GB, free: 8.348 MB / 1.139 GB Notification: Performance of NFTyping.typeClassSections: time 0.001626/0.5612, allocations: 0.586 MB / 1.443 GB, free: 7.762 MB / 1.139 GB Notification: Performance of NFFlatten.flatten: time 0.002659/0.5639, allocations: 1.993 MB / 1.445 GB, free: 5.758 MB / 1.139 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001457/0.5653, allocations: 0.9262 MB / 1.446 GB, free: 4.809 MB / 1.139 GB Notification: Performance of NFEvalConstants.evaluate: time 0.001316/0.5666, allocations: 0.9191 MB / 1.447 GB, free: 3.887 MB / 1.139 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001897/0.5685, allocations: 1.552 MB / 1.448 GB, free: 2.332 MB / 1.139 GB Notification: Performance of NFPackage.collectConstants: time 0.0002078/0.5687, allocations: 112 kB / 1.448 GB, free: 2.223 MB / 1.139 GB Notification: Performance of NFFlatten.collectFunctions: time 0.0003835/0.5691, allocations: 164 kB / 1.448 GB, free: 2.062 MB / 1.139 GB Notification: Performance of NFScalarize.scalarize: time 0.0004922/0.5696, allocations: 0.5309 MB / 1.449 GB, free: 1.527 MB / 1.139 GB Notification: Performance of NFVerifyModel.verify: time 0.0006273/0.5703, allocations: 0.6245 MB / 1.449 GB, free: 0.8984 MB / 1.139 GB Notification: Performance of NFConvertDAE.convert: time 0.002316/0.5726, allocations: 2.034 MB / 1.451 GB, free: 14.86 MB / 1.154 GB Notification: Performance of FrontEnd - DAE generated: time 4.098e-06/0.5726, allocations: 0 / 1.451 GB, free: 14.86 MB / 1.154 GB Notification: Performance of FrontEnd: time 1.312e-06/0.5726, allocations: 0 / 1.451 GB, free: 14.86 MB / 1.154 GB Notification: Performance of Transformations before backend: time 2.906e-05/0.5726, allocations: 0 / 1.451 GB, free: 14.86 MB / 1.154 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 196 * Number of variables: 196 Notification: Performance of Generate backend data structure: time 0.003938/0.5765, allocations: 2.481 MB / 1.454 GB, free: 12.32 MB / 1.154 GB Notification: Performance of prepare preOptimizeDAE: time 4.008e-05/0.5766, allocations: 8.031 kB / 1.454 GB, free: 12.32 MB / 1.154 GB Notification: Performance of preOpt introduceOutputAliases (simulation): time 0.0001638/0.5767, allocations: 134.9 kB / 1.454 GB, free: 12.18 MB / 1.154 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.0003922/0.5771, allocations: 263.2 kB / 1.454 GB, free: 11.92 MB / 1.154 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001647/0.5788, allocations: 1.008 MB / 1.455 GB, free: 10.86 MB / 1.154 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001799/0.579, allocations: 121.4 kB / 1.455 GB, free: 10.73 MB / 1.154 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001299/0.5791, allocations: 88 kB / 1.455 GB, free: 10.64 MB / 1.154 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001628/0.5807, allocations: 0.9192 MB / 1.456 GB, free: 9.684 MB / 1.154 GB Notification: Performance of preOpt findStateOrder (simulation): time 2.855e-05/0.5807, allocations: 4 kB / 1.456 GB, free: 9.68 MB / 1.154 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 7.971e-05/0.5808, allocations: 35.98 kB / 1.456 GB, free: 9.645 MB / 1.154 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.62e-05/0.5809, allocations: 20 kB / 1.456 GB, free: 9.625 MB / 1.154 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.001481/0.5823, allocations: 0.6558 MB / 1.457 GB, free: 8.969 MB / 1.154 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 0.005408/0.5877, allocations: 3.026 MB / 1.46 GB, free: 5.867 MB / 1.154 GB Notification: Performance of preOpt comSubExp (simulation): time 0.001532/0.5893, allocations: 0.677 MB / 1.461 GB, free: 5.18 MB / 1.154 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0008151/0.5901, allocations: 388.8 kB / 1.461 GB, free: 4.801 MB / 1.154 GB Notification: Performance of preOpt evalFunc (simulation): time 4.493e-05/0.5901, allocations: 12.66 kB / 1.461 GB, free: 4.789 MB / 1.154 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.0008738/0.591, allocations: 436.2 kB / 1.461 GB, free: 4.348 MB / 1.154 GB Notification: Performance of pre-optimization done (n=79): time 2.495e-06/0.591, allocations: 0 / 1.461 GB, free: 4.348 MB / 1.154 GB Notification: Performance of matching and sorting (n=79): time 0.005899/0.5969, allocations: 1.95 MB / 1.463 GB, free: 2.387 MB / 1.154 GB Notification: Performance of inlineWhenForInitialization (initialization): time 8.419e-05/0.597, allocations: 85.77 kB / 1.463 GB, free: 2.281 MB / 1.154 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00394/0.6009, allocations: 3.252 MB / 1.467 GB, free: 15 MB / 1.17 GB Notification: Performance of collectPreVariables (initialization): time 9.021e-05/0.601, allocations: 49.69 kB / 1.467 GB, free: 14.95 MB / 1.17 GB Notification: Performance of collectInitialEqns (initialization): time 0.0009335/0.602, allocations: 0.9529 MB / 1.468 GB, free: 13.98 MB / 1.17 GB Notification: Performance of collectInitialBindings (initialization): time 0.0002739/0.6022, allocations: 265.7 kB / 1.468 GB, free: 13.73 MB / 1.17 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002405/0.6025, allocations: 150.7 kB / 1.468 GB, free: 13.57 MB / 1.17 GB Notification: Performance of setup shared object (initialization): time 0.0001874/0.6027, allocations: 345.9 kB / 1.468 GB, free: 13.23 MB / 1.17 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0007526/0.6034, allocations: 325.8 kB / 1.469 GB, free: 12.91 MB / 1.17 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0008944/0.6043, allocations: 499 kB / 1.469 GB, free: 12.37 MB / 1.17 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.001494/0.6058, allocations: 0.7422 MB / 1.47 GB, free: 11.58 MB / 1.17 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 5.771e-06/0.6058, allocations: 0 / 1.47 GB, free: 11.58 MB / 1.17 GB Notification: Performance of matching and sorting (n=110) (initialization): time 0.002787/0.6086, allocations: 1.305 MB / 1.471 GB, free: 10.26 MB / 1.17 GB Notification: Performance of prepare postOptimizeDAE: time 2.443e-05/0.6086, allocations: 8 kB / 1.471 GB, free: 10.25 MB / 1.17 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.949e-05/0.6086, allocations: 4 kB / 1.471 GB, free: 10.25 MB / 1.17 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.0009981/0.6096, allocations: 316 kB / 1.471 GB, free: 9.938 MB / 1.17 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.000559/0.6102, allocations: 131.7 kB / 1.472 GB, free: 9.809 MB / 1.17 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006503/0.6167, allocations: 3.907 MB / 1.475 GB, free: 5.797 MB / 1.17 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0007173/0.6174, allocations: 119.3 kB / 1.475 GB, free: 5.68 MB / 1.17 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.914e-05/0.6175, allocations: 32 kB / 1.475 GB, free: 5.648 MB / 1.17 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 16 * Number of states: 0 () * Number of discrete variables: 34 (assEqu.nFai,$PRE.assEqu.nFai,$whenCondition7,$PRE.intGai.nextTimeEvent,$whenCondition6,$PRE.reference.nextTimeEvent,$whenCondition5,$PRE.setTemp.nextTimeEvent,$whenCondition4,$whenCondition2,intGai.nextTimeEvent,intGai.nextTimeEventScaled,$PRE.intGai.nextTimeEventScaled,reference.nextTimeEvent,reference.nextTimeEventScaled,$PRE.reference.nextTimeEventScaled,setTemp.nextTimeEvent,setTemp.nextTimeEventScaled,$PRE.setTemp.nextTimeEventScaled,hysteresis.y,$PRE.hysteresis.y,assEqu.satisfied,$PRE.assEqu.satisfied,mean.y_last,$PRE.mean.y_last,not1.y,timer.entryTime,$PRE.timer.entryTime,thr.y,cha.u,$PRE.cha.u,$whenCondition1,$whenCondition3,conHeaCoo.I.trigger_internal) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (78): * Single equations (assignments): 77 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 1 * 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): 1 system {(2,31)} Notification: Performance of prepare postOptimizeDAE: time 0.0009046/0.6184, allocations: 0.5795 MB / 1.476 GB, free: 5.062 MB / 1.17 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002538/0.6186, allocations: 222.5 kB / 1.476 GB, free: 4.844 MB / 1.17 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002575/0.6212, allocations: 1.24 MB / 1.477 GB, free: 3.586 MB / 1.17 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.171e-05/0.6212, allocations: 11.94 kB / 1.477 GB, free: 3.574 MB / 1.17 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.236e-06/0.6212, allocations: 0 / 1.477 GB, free: 3.574 MB / 1.17 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.142e-05/0.6212, allocations: 7.969 kB / 1.478 GB, free: 3.566 MB / 1.17 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004364/0.6256, allocations: 2.363 MB / 1.48 GB, free: 1.145 MB / 1.17 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.392e-06/0.6256, allocations: 3.938 kB / 1.48 GB, free: 1.141 MB / 1.17 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003398/0.6259, allocations: 79.83 kB / 1.48 GB, free: 1.062 MB / 1.17 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.0009464/0.6269, allocations: 337.5 kB / 1.48 GB, free: 0.7266 MB / 1.17 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.01e-05/0.627, allocations: 19.98 kB / 1.48 GB, free: 0.707 MB / 1.17 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.007483/0.6344, allocations: 5.264 MB / 1.485 GB, free: 11.21 MB / 1.186 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.683e-06/0.6344, allocations: 0 / 1.485 GB, free: 11.21 MB / 1.186 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003181/0.6376, allocations: 1.662 MB / 1.487 GB, free: 9.527 MB / 1.186 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005359/0.6382, allocations: 262.3 kB / 1.487 GB, free: 9.27 MB / 1.186 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000156/0.6383, allocations: 16 kB / 1.487 GB, free: 9.254 MB / 1.186 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00049/0.6388, allocations: 55.83 kB / 1.487 GB, free: 9.199 MB / 1.186 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0002105/0.639, allocations: 104.8 kB / 1.487 GB, free: 9.098 MB / 1.186 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.852e-05/0.6391, allocations: 31.98 kB / 1.487 GB, free: 9.066 MB / 1.186 GB Notification: Performance of sorting global known variables: time 0.002925/0.642, allocations: 2.37 MB / 1.49 GB, free: 6.684 MB / 1.186 GB Notification: Performance of sort global known variables: time 1.1e-07/0.642, allocations: 0 / 1.49 GB, free: 6.684 MB / 1.186 GB Notification: Performance of remove unused functions: time 0.001021/0.643, allocations: 331.5 kB / 1.49 GB, free: 6.359 MB / 1.186 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 5 (mean.x,assEqu.diff,conHeaCoo.I.y,thermalZoneTwoElements.intWallRC.thermCapInt[1].T,thermalZoneTwoElements.extWallRC.thermCapExt[1].T) * Number of discrete variables: 21 (not1.y,$whenCondition7,$whenCondition6,$whenCondition5,$whenCondition4,$whenCondition3,$whenCondition2,$whenCondition1,cha.u,thr.y,timer.entryTime,mean.y_last,assEqu.nFai,assEqu.satisfied,hysteresis.y,setTemp.nextTimeEventScaled,setTemp.nextTimeEvent,reference.nextTimeEventScaled,reference.nextTimeEvent,intGai.nextTimeEventScaled,intGai.nextTimeEvent) * Number of discrete states: 11 (intGai.nextTimeEvent,reference.nextTimeEvent,setTemp.nextTimeEvent,mean.x,assEqu.satisfied,assEqu.nFai,setTemp.nextTimeEventScaled,reference.nextTimeEventScaled,intGai.nextTimeEventScaled,hysteresis.y,cha.u) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (52): * Single equations (assignments): 41 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 9 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems (#iteration vars, #inner vars, density): 1 system {(1,3,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(3,27)} Notification: Performance of Backend phase and start with SimCode phase: time 0.005343/0.6484, allocations: 2.644 MB / 1.493 GB, free: 3.902 MB / 1.186 GB Notification: Performance of simCode: created initialization part: time 0.002249/0.6506, allocations: 1.024 MB / 1.494 GB, free: 2.863 MB / 1.186 GB Notification: Performance of simCode: created event and clocks part: time 2.615e-06/0.6506, allocations: 0 / 1.494 GB, free: 2.863 MB / 1.186 GB Notification: Performance of simCode: created simulation system equations: time 0.001517/0.6521, allocations: 0.7563 MB / 1.494 GB, free: 2.082 MB / 1.186 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001386/0.6535, allocations: 306.3 kB / 1.495 GB, free: 1.793 MB / 1.186 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02231/0.6758, allocations: 14.07 MB / 1.508 GB, free: 3.449 MB / 1.201 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001198/0.677, allocations: 0.9647 MB / 1.509 GB, free: 2.449 MB / 1.201 GB Notification: Performance of simCode: alias equations: time 0.0004755/0.6775, allocations: 127.2 kB / 1.509 GB, free: 2.32 MB / 1.201 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009161/0.6784, allocations: 0.7609 MB / 1.51 GB, free: 1.562 MB / 1.201 GB Notification: Performance of SimCode: time 7.11e-07/0.6784, allocations: 0 / 1.51 GB, free: 1.562 MB / 1.201 GB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.08864/0.7671, allocations: 37.16 MB / 1.547 GB, free: 12.76 MB / 1.248 GB Notification: Performance of buildModelFMU: Generate platform static: time 15.43/16.2, allocations: 6.906 kB / 1.547 GB, free: 12.76 MB / 1.248 GB " [Timeout remaining time 283] (rm -f Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.pipe ; mkfifo Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.pipe ; head -c 1048576 < Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.pipe >> ../files/Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.sim & python3 -m fmpy simulate --output-file Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11_res.csv --start-time 0 --stop-time 5.184e+06 --timeout 400 --relative-tolerance 1e-07 --interface-type ModelExchange --solver CVode --output-interval 60 Buildings_11_Buildings_ThermalZones_ReducedOrder_Validation_VDI6007_TestCase11.fmu > Buildings_11_Buildings.ThermalZones.ReducedOrder.Validation.VDI6007.TestCase11.pipe 2>&1) [Timeout 420.0] [Calling os._exit(0), Time elapsed: 23.116114960052073] Failed to read output from testmodel.py, exit status != 0: 16.903340505901724 16.43413336 15.855901717 Calling exit ...