Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas.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.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas") translateModel(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001041/0.001041, allocations: 92.08 kB / 15.06 MB, free: 1.098 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001207/0.001207, allocations: 172.7 kB / 15.95 MB, free: 208 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.451/1.451, allocations: 223.3 MB / 240 MB, free: 5.422 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0-master/package.mo): time 0.9671/0.9671, allocations: 135.3 MB / 426.4 MB, free: 14.25 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0003557/0.0003559, allocations: 8.875 kB / 0.507 GB, free: 5.133 MB / 414.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.187/0.1874, allocations: 82.31 MB / 0.5874 GB, free: 2.992 MB / 494.1 MB Notification: Performance of NFInst.instantiate(IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas): time 0.5938/0.7813, allocations: 163.2 MB / 0.7468 GB, free: 7.238 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.01986/0.8012, allocations: 12.86 MB / 0.7594 GB, free: 12.87 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001794/0.803, allocations: 35.75 kB / 0.7594 GB, free: 12.84 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.001542/0.8046, allocations: 349.9 kB / 0.7597 GB, free: 12.49 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.005249/0.8099, allocations: 1.369 MB / 0.7611 GB, free: 11.12 MB / 0.5762 GB Notification: Performance of NFTyping.typeClassSections: time 0.002927/0.8128, allocations: 0.7443 MB / 0.7618 GB, free: 10.39 MB / 0.5762 GB Notification: Performance of NFFlatten.flatten: time 0.004888/0.8177, allocations: 2.913 MB / 0.7646 GB, free: 7.465 MB / 0.5762 GB Notification: Performance of NFFlatten.resolveConnections: time 0.00129/0.819, allocations: 0.5557 MB / 0.7652 GB, free: 6.895 MB / 0.5762 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002422/0.8215, allocations: 0.7585 MB / 0.7659 GB, free: 6.133 MB / 0.5762 GB Notification: Performance of NFSimplifyModel.simplify: time 0.001713/0.8232, allocations: 0.6965 MB / 0.7666 GB, free: 5.434 MB / 0.5762 GB Notification: Performance of NFPackage.collectConstants: time 0.0001439/0.8234, allocations: 35.94 kB / 0.7666 GB, free: 5.398 MB / 0.5762 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002965/0.8264, allocations: 1.064 MB / 0.7677 GB, free: 4.332 MB / 0.5762 GB Notification: Performance of NFScalarize.scalarize: time 0.0005015/0.8269, allocations: 303.1 kB / 0.768 GB, free: 4.035 MB / 0.5762 GB Notification: Performance of NFVerifyModel.verify: time 0.0004356/0.8273, allocations: 209.3 kB / 0.7682 GB, free: 3.824 MB / 0.5762 GB Notification: Performance of NFConvertDAE.convert: time 0.00218/0.8295, allocations: 1.354 MB / 0.7695 GB, free: 2.469 MB / 0.5762 GB Notification: Performance of FrontEnd - DAE generated: time 6.422e-06/0.8295, allocations: 4 kB / 0.7695 GB, free: 2.465 MB / 0.5762 GB Notification: Performance of FrontEnd: time 2.305e-06/0.8295, allocations: 0 / 0.7695 GB, free: 2.465 MB / 0.5762 GB Notification: Performance of Transformations before backend: time 2.073e-05/0.8296, allocations: 0 / 0.7695 GB, free: 2.465 MB / 0.5762 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 150 * Number of variables: 150 Notification: Performance of Generate backend data structure: time 0.001973/0.8315, allocations: 1.151 MB / 0.7706 GB, free: 1.266 MB / 0.5762 GB Notification: Performance of prepare preOptimizeDAE: time 3.742e-05/0.8316, allocations: 8.031 kB / 0.7706 GB, free: 1.258 MB / 0.5762 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002699/0.8343, allocations: 438.4 kB / 0.771 GB, free: 0.8281 MB / 0.5762 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001559/0.8359, allocations: 0.7843 MB / 0.7718 GB, free: 0 / 0.5762 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 6.766e-05/0.836, allocations: 49.45 kB / 0.7718 GB, free: 15.95 MB / 0.5919 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001054/0.8361, allocations: 67.94 kB / 0.7719 GB, free: 15.88 MB / 0.5919 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.001238/0.8373, allocations: 0.7094 MB / 0.7726 GB, free: 15.16 MB / 0.5919 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.92e-05/0.8374, allocations: 0 / 0.7726 GB, free: 15.16 MB / 0.5919 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 6.445e-05/0.8374, allocations: 28 kB / 0.7726 GB, free: 15.14 MB / 0.5919 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 3.255e-05/0.8375, allocations: 25.3 kB / 0.7727 GB, free: 15.11 MB / 0.5919 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0009759/0.8384, allocations: 0.5712 MB / 0.7732 GB, free: 14.54 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 0.003906/0.8424, allocations: 2.93 MB / 0.7761 GB, free: 11.35 MB / 0.5919 GB Notification: Performance of preOpt comSubExp (simulation): time 0.0007268/0.8431, allocations: 473.7 kB / 0.7765 GB, free: 10.87 MB / 0.5919 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.0003888/0.8435, allocations: 245.6 kB / 0.7768 GB, free: 10.62 MB / 0.5919 GB Notification: Performance of preOpt evalFunc (simulation): time 5.104e-05/0.8436, allocations: 11.98 kB / 0.7768 GB, free: 10.61 MB / 0.5919 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.366e-05/0.8436, allocations: 38.56 kB / 0.7768 GB, free: 10.57 MB / 0.5919 GB Notification: Performance of pre-optimization done (n=45): time 2.284e-06/0.8436, allocations: 0 / 0.7768 GB, free: 10.57 MB / 0.5919 GB Notification: Performance of matching and sorting (n=63): time 0.009531/0.8532, allocations: 3.232 MB / 0.78 GB, free: 7.242 MB / 0.5919 GB Notification: Performance of inlineWhenForInitialization (initialization): time 6.205e-05/0.8533, allocations: 89.66 kB / 0.7801 GB, free: 7.137 MB / 0.5919 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.000817/0.8541, allocations: 0.5666 MB / 0.7806 GB, free: 6.559 MB / 0.5919 GB Notification: Performance of collectPreVariables (initialization): time 8.659e-05/0.8542, allocations: 37.7 kB / 0.7806 GB, free: 6.516 MB / 0.5919 GB Notification: Performance of collectInitialEqns (initialization): time 0.0002836/0.8545, allocations: 364.3 kB / 0.781 GB, free: 6.156 MB / 0.5919 GB Notification: Performance of collectInitialBindings (initialization): time 0.0003195/0.8548, allocations: 216.8 kB / 0.7812 GB, free: 5.941 MB / 0.5919 GB Notification: Performance of simplifyInitialFunctions (initialization): time 5.533e-05/0.8549, allocations: 16 kB / 0.7812 GB, free: 5.926 MB / 0.5919 GB Notification: Performance of setup shared object (initialization): time 0.0002623/0.8551, allocations: 386.7 kB / 0.7816 GB, free: 5.539 MB / 0.5919 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0004653/0.8556, allocations: 277.2 kB / 0.7818 GB, free: 5.266 MB / 0.5919 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0006662/0.8563, allocations: 388.4 kB / 0.7822 GB, free: 4.855 MB / 0.5919 GB Warning: It was not possible to determine if the initialization problem is consistent, because of not evaluable parameters/start values during compile time: vol.dynBal.medium.p = vol.dynBal.p_start (0.9999999999999999 * vol1.dynBal.p_start = vol.dynBal.p_start) Notification: Performance of analyzeInitialSystem (initialization): time 0.006053/0.8624, allocations: 1.457 MB / 0.7836 GB, free: 3.379 MB / 0.5919 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.836e-06/0.8624, allocations: 0 / 0.7836 GB, free: 3.379 MB / 0.5919 GB Notification: Performance of matching and sorting (n=74) (initialization): time 0.002863/0.8653, allocations: 1.133 MB / 0.7847 GB, free: 2.238 MB / 0.5919 GB Notification: Performance of prepare postOptimizeDAE: time 0.0001106/0.8654, allocations: 132.5 kB / 0.7849 GB, free: 2.086 MB / 0.5919 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 9.167e-06/0.8654, allocations: 4 kB / 0.7849 GB, free: 2.082 MB / 0.5919 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.002111/0.8675, allocations: 0.5033 MB / 0.7854 GB, free: 1.578 MB / 0.5919 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0005252/0.8681, allocations: 95.86 kB / 0.7855 GB, free: 1.484 MB / 0.5919 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007526/0.8756, allocations: 5.068 MB / 0.7904 GB, free: 12.26 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009634/0.8766, allocations: 59.86 kB / 0.7905 GB, free: 12.2 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 5.563e-05/0.8767, allocations: 23.94 kB / 0.7905 GB, free: 12.18 MB / 0.6075 GB Notification: Performance of prepare postOptimizeDAE: time 1.136e-05/0.8767, allocations: 4 kB / 0.7905 GB, free: 12.18 MB / 0.6075 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002508/0.8792, allocations: 1.048 MB / 0.7915 GB, free: 11.12 MB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.382e-06/0.8793, allocations: 0 / 0.7915 GB, free: 11.12 MB / 0.6075 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001979/0.8813, allocations: 0.5052 MB / 0.792 GB, free: 10.62 MB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003645/0.8816, allocations: 75.84 kB / 0.7921 GB, free: 10.54 MB / 0.6075 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.007022/0.8887, allocations: 4.477 MB / 0.7964 GB, free: 5.938 MB / 0.6075 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0009941/0.8897, allocations: 66.25 kB / 0.7965 GB, free: 5.875 MB / 0.6075 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.608e-05/0.8898, allocations: 23.98 kB / 0.7965 GB, free: 5.852 MB / 0.6075 GB Warning: The initial conditions are over specified. The following 1 initial equations are redundant, so they are removed from the initialization sytem: vol.dynBal.medium.p = vol.dynBal.p_start. Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 7 * 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 (46): * Single equations (assignments): 44 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 1 {1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {6 23} Notification: Performance of prepare postOptimizeDAE: time 0.0006669/0.8905, allocations: 353.2 kB / 0.7969 GB, free: 5.496 MB / 0.6075 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002493/0.8907, allocations: 71.16 kB / 0.7969 GB, free: 5.426 MB / 0.6075 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002766/0.8935, allocations: 1.119 MB / 0.798 GB, free: 4.289 MB / 0.6075 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.601e-05/0.8935, allocations: 8 kB / 0.798 GB, free: 4.281 MB / 0.6075 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.026e-05/0.8936, allocations: 4 kB / 0.798 GB, free: 4.277 MB / 0.6075 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002502/0.8961, allocations: 1.306 MB / 0.7993 GB, free: 2.879 MB / 0.6075 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.004976/0.9011, allocations: 2.511 MB / 0.8018 GB, free: 308 kB / 0.6075 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.394e-06/0.9011, allocations: 4 kB / 0.8018 GB, free: 304 kB / 0.6075 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003443/0.9015, allocations: 67.91 kB / 0.8018 GB, free: 236 kB / 0.6075 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.002279/0.9038, allocations: 0.5057 MB / 0.8023 GB, free: 15.72 MB / 0.6231 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 7.094e-05/0.9038, allocations: 23.98 kB / 0.8024 GB, free: 15.7 MB / 0.6231 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00717/0.911, allocations: 4.806 MB / 0.8071 GB, free: 10.74 MB / 0.6231 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.219e-06/0.9111, allocations: 3.953 kB / 0.8071 GB, free: 10.74 MB / 0.6231 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.00358/0.9147, allocations: 1.545 MB / 0.8086 GB, free: 9.164 MB / 0.6231 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0006561/0.9154, allocations: 236.2 kB / 0.8088 GB, free: 8.914 MB / 0.6231 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001924/0.9156, allocations: 20 kB / 0.8088 GB, free: 8.895 MB / 0.6231 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009705/0.9166, allocations: 59.78 kB / 0.8089 GB, free: 8.836 MB / 0.6231 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001874/0.9168, allocations: 52.44 kB / 0.8089 GB, free: 8.785 MB / 0.6231 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.436e-05/0.9168, allocations: 27.98 kB / 0.8089 GB, free: 8.758 MB / 0.6231 GB Notification: Performance of sorting global known variables: time 0.0007373/0.9176, allocations: 407 kB / 0.8093 GB, free: 8.363 MB / 0.6231 GB Notification: Performance of sort global known variables: time 1e-07/0.9176, allocations: 0 / 0.8093 GB, free: 8.363 MB / 0.6231 GB Notification: Performance of remove unused functions: time 0.001992/0.9196, allocations: 456 kB / 0.8098 GB, free: 7.918 MB / 0.6231 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 4 * Number of states: 5 (vol.dynBal.medium.Xi[1],vol.dynBal.medium.T,vol1.dynBal.medium.p,vol1.dynBal.medium.Xi[1],vol1.dynBal.medium.T) * 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 (39): * Single equations (assignments): 37 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 1 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Equation system details: * Constant Jacobian: 0 * Linear Jacobian (size,density): 0 * Non-linear Jacobian: 1 {1} * Without analytic Jacobian: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 0 * Non-linear torn systems: 1 {6 19} Notification: Performance of Backend phase and start with SimCode phase: time 0.0006197/0.9202, allocations: 222 kB / 0.81 GB, free: 7.711 MB / 0.6231 GB Notification: Performance of simCode: created initialization part: time 0.003935/0.9242, allocations: 1.711 MB / 0.8116 GB, free: 5.973 MB / 0.6231 GB Notification: Performance of simCode: created event and clocks part: time 1.038e-05/0.9242, allocations: 4 kB / 0.8117 GB, free: 5.969 MB / 0.6231 GB Notification: Performance of simCode: created simulation system equations: time 0.001562/0.9258, allocations: 0.6611 MB / 0.8123 GB, free: 5.297 MB / 0.6231 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002522/0.9283, allocations: 485.4 kB / 0.8128 GB, free: 4.832 MB / 0.6231 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.003869/0.9322, allocations: 2.282 MB / 0.815 GB, free: 2.52 MB / 0.6231 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.000899/0.9331, allocations: 1.054 MB / 0.816 GB, free: 1.434 MB / 0.6231 GB Notification: Performance of simCode: alias equations: time 0.0009775/0.9341, allocations: 190.6 kB / 0.8162 GB, free: 1.242 MB / 0.6231 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001731/0.9343, allocations: 51.44 kB / 0.8162 GB, free: 1.191 MB / 0.6231 GB Notification: Performance of SimCode: time 7.51e-07/0.9343, allocations: 0 / 0.8162 GB, free: 1.191 MB / 0.6231 GB Notification: Performance of Templates: time 0.04117/0.9755, allocations: 22.99 MB / 0.8387 GB, free: 10.44 MB / 0.6544 GB make -j1 -f IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas.makefile (rm -f IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas.pipe ; mkfifo IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas.pipe ; head -c 1048576 < IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas.pipe >> ../files/IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas.sim & ./IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_dev_IDEAS.Fluid.MixingVolumes.Validation.CoupledVolumesSpecializedAirPerfectGas.pipe 2>&1)