Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives.conf.json
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo", uses=false)
loadFile("/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo", uses=false)
Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo)
Using package Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo)
Using package Complex with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo)
Using package ModelicaServices with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo)
Running command: translateModel(IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives")
translateModel(IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.00132/0.00132, allocations: 107.8 kB / 16.41 MB, free: 6.473 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001299/0.001299, allocations: 185.6 kB / 17.34 MB, free: 5.75 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.43/1.43, allocations: 222.9 MB / 241 MB, free: 15.16 MB / 206.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.8934/0.8934, allocations: 135.2 MB / 426.4 MB, free: 4.062 MB / 334.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.00191/0.00191, allocations: 66.39 kB / 0.5863 GB, free: 21.84 MB / 446.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1646/0.1665, allocations: 80.93 MB / 0.6654 GB, free: 5.875 MB / 0.4981 GB
[/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/Blocks/Math.mo:543:5-544:48:writable] Warning: Parameter forcedPump1.gaiSpe.k has no value, and is fixed during initialization (fixed=true), using available start value (start=1) as default value.
Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives): time 0.08534/0.2519, allocations: 78.16 MB / 0.7417 GB, free: 7.441 MB / 0.5762 GB
Notification: Performance of NFInst.instExpressions: time 0.5136/0.7655, allocations: 25.94 MB / 0.767 GB, free: 2.035 MB / 0.5762 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.006869/0.7723, allocations: 116.9 kB / 0.7671 GB, free: 2.035 MB / 0.5762 GB
Notification: Performance of NFTyping.typeComponents: time 0.007143/0.7795, allocations: 1.675 MB / 0.7688 GB, free: 2 MB / 0.5762 GB
Notification: Performance of NFTyping.typeBindings: time 0.01785/0.7973, allocations: 3.566 MB / 0.7723 GB, free: 1.848 MB / 0.5762 GB
Notification: Performance of NFTyping.typeClassSections: time 0.01182/0.8091, allocations: 2.957 MB / 0.7751 GB, free: 1.781 MB / 0.5762 GB
Notification: Performance of NFFlatten.flatten: time 0.01794/0.8271, allocations: 6.994 MB / 0.782 GB, free: 1.715 MB / 0.5762 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.008342/0.8354, allocations: 2.2 MB / 0.7841 GB, free: 1.461 MB / 0.5762 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.01194/0.8474, allocations: 3.024 MB / 0.7871 GB, free: 0.8867 MB / 0.5762 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.007004/0.8544, allocations: 2.227 MB / 0.7893 GB, free: 212 kB / 0.5762 GB
Notification: Performance of NFPackage.collectConstants: time 0.002275/0.8566, allocations: 313.3 kB / 0.7896 GB, free: 212 kB / 0.5762 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.009349/0.866, allocations: 2.164 MB / 0.7917 GB, free: 15.7 MB / 0.5919 GB
Notification: Performance of NFScalarize.scalarize: time 0.002587/0.8686, allocations: 1.303 MB / 0.7929 GB, free: 15.12 MB / 0.5919 GB
Notification: Performance of NFVerifyModel.verify: time 0.006111/0.8747, allocations: 1.995 MB / 0.7949 GB, free: 13.88 MB / 0.5919 GB
Notification: Performance of NFConvertDAE.convert: time 0.01506/0.8898, allocations: 6.117 MB / 0.8009 GB, free: 10.48 MB / 0.5919 GB
Notification: Performance of FrontEnd - DAE generated: time 6.482e-06/0.8898, allocations: 0 / 0.8009 GB, free: 10.48 MB / 0.5919 GB
Notification: Performance of FrontEnd: time 2.675e-06/0.8898, allocations: 0 / 0.8009 GB, free: 10.48 MB / 0.5919 GB
Notification: Performance of Transformations before backend: time 0.0002287/0.89, allocations: 4 kB / 0.8009 GB, free: 10.47 MB / 0.5919 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 397
 * Number of variables: 397
Notification: Performance of Generate backend data structure: time 0.01234/0.9023, allocations: 4.618 MB / 0.8054 GB, free: 7.207 MB / 0.5919 GB
Notification: Performance of prepare preOptimizeDAE: time 4.835e-05/0.9024, allocations: 9.016 kB / 0.8054 GB, free: 7.207 MB / 0.5919 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00513/0.9075, allocations: 0.9514 MB / 0.8063 GB, free: 6.738 MB / 0.5919 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.008388/0.9159, allocations: 3.791 MB / 0.81 GB, free: 4.188 MB / 0.5919 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0001665/0.9161, allocations: 139.5 kB / 0.8101 GB, free: 4.129 MB / 0.5919 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0004784/0.9165, allocations: 179.6 kB / 0.8103 GB, free: 4.07 MB / 0.5919 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.005024/0.9216, allocations: 2.382 MB / 0.8126 GB, free: 2.625 MB / 0.5919 GB
Notification: Performance of preOpt findStateOrder (simulation): time 3.439e-05/0.9216, allocations: 2.25 kB / 0.8126 GB, free: 2.625 MB / 0.5919 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001934/0.9218, allocations: 62.28 kB / 0.8127 GB, free: 2.578 MB / 0.5919 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.762e-05/0.9218, allocations: 40.31 kB / 0.8127 GB, free: 2.578 MB / 0.5919 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00498/0.9268, allocations: 1.868 MB / 0.8146 GB, free: 1.684 MB / 0.5919 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 0.01851/0.9453, allocations: 10.65 MB / 0.825 GB, free: 8.848 MB / 0.6075 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.004762/0.9501, allocations: 1.518 MB / 0.8265 GB, free: 7.652 MB / 0.6075 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.002095/0.9522, allocations: 0.707 MB / 0.8271 GB, free: 6.945 MB / 0.6075 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.007087/0.9593, allocations: 3.638 MB / 0.8307 GB, free: 3.066 MB / 0.6075 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.938e-05/0.9593, allocations: 39.22 kB / 0.8307 GB, free: 3.02 MB / 0.6075 GB
Notification: Performance of pre-optimization done (n=76): time 2.564e-06/0.9593, allocations: 0 / 0.8307 GB, free: 3.02 MB / 0.6075 GB
Notification: Performance of matching and sorting (n=76): time 0.008428/0.9677, allocations: 2.582 MB / 0.8333 GB, free: 436 kB / 0.6075 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.018e-05/0.9678, allocations: 60.06 kB / 0.8333 GB, free: 364 kB / 0.6075 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00624/0.974, allocations: 3.737 MB / 0.837 GB, free: 12.59 MB / 0.6231 GB
Notification: Performance of collectPreVariables (initialization): time 0.000406/0.9744, allocations: 56.28 kB / 0.837 GB, free: 12.54 MB / 0.6231 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001654/0.9761, allocations: 1.606 MB / 0.8386 GB, free: 10.93 MB / 0.6231 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0005169/0.9766, allocations: 286 kB / 0.8389 GB, free: 10.65 MB / 0.6231 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0006599/0.9773, allocations: 383.4 kB / 0.8392 GB, free: 10.27 MB / 0.6231 GB
Notification: Performance of setup shared object (initialization): time 0.0001576/0.9774, allocations: 301.1 kB / 0.8395 GB, free: 9.977 MB / 0.6231 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.002769/0.9802, allocations: 1.266 MB / 0.8407 GB, free: 8.707 MB / 0.6231 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.003465/0.9836, allocations: 1.974 MB / 0.8427 GB, free: 6.402 MB / 0.6231 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.006167/0.9898, allocations: 3.151 MB / 0.8458 GB, free: 2.977 MB / 0.6231 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.025e-05/0.9898, allocations: 8 kB / 0.8458 GB, free: 2.969 MB / 0.6231 GB
Notification: Performance of matching and sorting (n=202) (initialization): time 0.008398/0.9982, allocations: 3.63 MB / 0.8493 GB, free: 15.34 MB / 0.6387 GB
Notification: Performance of prepare postOptimizeDAE: time 3.669e-05/0.9983, allocations: 16.16 kB / 0.8493 GB, free: 15.33 MB / 0.6387 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.013e-05/0.9983, allocations: 24 kB / 0.8493 GB, free: 15.3 MB / 0.6387 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0007193/0.999, allocations: 306.8 kB / 0.8496 GB, free: 15 MB / 0.6387 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001875/1.001, allocations: 443.2 kB / 0.8501 GB, free: 14.57 MB / 0.6387 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.0008915/1.002, allocations: 0.8099 MB / 0.8509 GB, free: 13.73 MB / 0.6387 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002856/1.005, allocations: 295.1 kB / 0.8511 GB, free: 13.45 MB / 0.6387 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003299/1.005, allocations: 132 kB / 0.8513 GB, free: 13.32 MB / 0.6387 GB
Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.003845/1.009, allocations: 1.737 MB / 0.853 GB, free: 11.57 MB / 0.6387 GB
Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003014/1.012, allocations: 1.736 MB / 0.8547 GB, free: 9.516 MB / 0.6387 GB
Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.005245/1.017, allocations: 2.698 MB / 0.8573 GB, free: 6.543 MB / 0.6387 GB
Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.557e-05/1.017, allocations: 4 kB / 0.8573 GB, free: 6.539 MB / 0.6387 GB
Notification: Performance of matching and sorting (n=202) (initialization_lambda0): time 0.007689/1.025, allocations: 3.186 MB / 0.8604 GB, free: 3.359 MB / 0.6387 GB
Notification: Performance of prepare postOptimizeDAE: time 2.719e-05/1.025, allocations: 12.78 kB / 0.8604 GB, free: 3.348 MB / 0.6387 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.568e-05/1.025, allocations: 25.09 kB / 0.8604 GB, free: 3.324 MB / 0.6387 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001048/1.026, allocations: 396.6 kB / 0.8608 GB, free: 2.934 MB / 0.6387 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001666/1.028, allocations: 407.3 kB / 0.8612 GB, free: 2.535 MB / 0.6387 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007468/1.035, allocations: 5.017 MB / 0.8661 GB, free: 13.3 MB / 0.6544 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003051/1.038, allocations: 214.7 kB / 0.8663 GB, free: 13.09 MB / 0.6544 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003845/1.038, allocations: 120 kB / 0.8664 GB, free: 12.98 MB / 0.6544 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 95
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (177):
 * Single equations (assignments): 173
 * Array equations: 3
 * 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
   {(1,4)}
Notification: Performance of prepare postOptimizeDAE: time 0.0005616/1.039, allocations: 289.3 kB / 0.8667 GB, free: 12.69 MB / 0.6544 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009803/1.04, allocations: 337.7 kB / 0.867 GB, free: 12.36 MB / 0.6544 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.006208/1.046, allocations: 2.26 MB / 0.8692 GB, free: 10.1 MB / 0.6544 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.956e-05/1.046, allocations: 8 kB / 0.8692 GB, free: 10.09 MB / 0.6544 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 3.497e-06/1.046, allocations: 0 / 0.8692 GB, free: 10.09 MB / 0.6544 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.383e-05/1.046, allocations: 3.984 kB / 0.8692 GB, free: 10.09 MB / 0.6544 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01075/1.057, allocations: 4.395 MB / 0.8735 GB, free: 5.637 MB / 0.6544 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.915e-06/1.057, allocations: 4.031 kB / 0.8735 GB, free: 5.633 MB / 0.6544 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001364/1.058, allocations: 247.6 kB / 0.8738 GB, free: 5.391 MB / 0.6544 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0004277/1.059, allocations: 147 kB / 0.8739 GB, free: 5.246 MB / 0.6544 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001119/1.059, allocations: 31.97 kB / 0.8739 GB, free: 5.215 MB / 0.6544 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0007855/1.06, allocations: 0.728 MB / 0.8747 GB, free: 4.461 MB / 0.6544 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.519e-06/1.06, allocations: 7.938 kB / 0.8747 GB, free: 4.453 MB / 0.6544 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.008346/1.068, allocations: 3.119 MB / 0.8777 GB, free: 1.297 MB / 0.6544 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.001853/1.07, allocations: 0.5804 MB / 0.8783 GB, free: 0.6953 MB / 0.6544 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007455/1.071, allocations: 16 kB / 0.8783 GB, free: 0.6797 MB / 0.6544 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002051/1.073, allocations: 127.9 kB / 0.8784 GB, free: 0.5547 MB / 0.6544 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001761/1.073, allocations: 64.91 kB / 0.8785 GB, free: 0.4922 MB / 0.6544 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0001629/1.073, allocations: 55.95 kB / 0.8785 GB, free: 448 kB / 0.6544 GB
Notification: Performance of sorting global known variables: time 0.005166/1.078, allocations: 2.57 MB / 0.881 GB, free: 13.86 MB / 0.67 GB
Notification: Performance of sort global known variables: time 2.8e-07/1.078, allocations: 0 / 0.881 GB, free: 13.86 MB / 0.67 GB
Notification: Performance of remove unused functions: time 0.006108/1.084, allocations: 1.519 MB / 0.8825 GB, free: 12.34 MB / 0.67 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 5
 * Number of states: 3 (ddp_dm_flow.x,ddp_dNrpm.x,dm_flow_dNrpm.x)
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Number of clocked states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for simulation (90):
 * Single equations (assignments): 81
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 8
 * 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
   {(1,5)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.002032/1.086, allocations: 0.6832 MB / 0.8832 GB, free: 11.7 MB / 0.67 GB
Notification: Performance of simCode: created initialization part: time 0.009788/1.096, allocations: 3.794 MB / 0.8869 GB, free: 7.898 MB / 0.67 GB
Notification: Performance of simCode: created event and clocks part: time 6.613e-06/1.096, allocations: 0 / 0.8869 GB, free: 7.898 MB / 0.67 GB
Notification: Performance of simCode: created simulation system equations: time 0.00253/1.099, allocations: 0.8102 MB / 0.8877 GB, free: 7.09 MB / 0.67 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.007634/1.106, allocations: 1.726 MB / 0.8894 GB, free: 5.379 MB / 0.67 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01297/1.119, allocations: 5.875 MB / 0.8951 GB, free: 15.46 MB / 0.6856 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.002394/1.122, allocations: 2.087 MB / 0.8971 GB, free: 13.34 MB / 0.6856 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001334/1.123, allocations: 267.3 kB / 0.8974 GB, free: 13.08 MB / 0.6856 GB
Notification: Performance of SimCode: time 1.944e-06/1.123, allocations: 0 / 0.8974 GB, free: 13.08 MB / 0.6856 GB
Notification: Performance of Templates: time 0.1163/1.239, allocations: 74.69 MB / 0.9703 GB, free: 2.719 MB / 0.7481 GB
make -j1 -f IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives.makefile
(rm -f IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives.sim & ./IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives  -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.Fluid.Movers.Validation.PumpCurveDerivatives.pipe 2>&1)