Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y.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/package.mo", uses=false)
Using package IDEAS with version 3.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/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.SpeedControlled_y,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y")
translateModel(IDEAS.Fluid.Movers.Validation.SpeedControlled_y,tolerance=1e-08,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y")
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.005568/0.005568, allocations: 96.31 kB / 15.73 MB, free: 6.043 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001182/0.001182, allocations: 193.9 kB / 16.67 MB, free: 5.969 MB / 14.72 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.33/1.33, allocations: 222.9 MB / 240.4 MB, free: 4.305 MB / 190.1 MB
Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.7496/0.7496, allocations: 132.2 MB / 422.7 MB, free: 1.691 MB / 350.1 MB
Notification: Performance of FrontEnd - loaded program: time 0.001195/0.001195, allocations: 66.98 kB / 0.5814 GB, free: 0.8594 MB / 430.1 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.1762/0.1774, allocations: 80.2 MB / 0.6597 GB, free: 13.49 MB / 0.4981 GB
Notification: Performance of NFInst.instantiate(IDEAS.Fluid.Movers.Validation.SpeedControlled_y): time 0.7259/0.9034, allocations: 323.4 MB / 0.9756 GB, free: 12.86 MB / 0.7012 GB
Notification: Performance of NFInst.instExpressions: time 0.02851/0.9319, allocations: 20.16 MB / 0.9952 GB, free: 8.641 MB / 0.7169 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.003919/0.9359, allocations: 87.5 kB / 0.9953 GB, free: 8.555 MB / 0.7169 GB
Notification: Performance of NFTyping.typeComponents: time 0.004272/0.9402, allocations: 1.495 MB / 0.9968 GB, free: 7.051 MB / 0.7169 GB
Notification: Performance of NFTyping.typeBindings: time 0.01102/0.9513, allocations: 4.202 MB / 1.001 GB, free: 2.836 MB / 0.7169 GB
Notification: Performance of NFTyping.typeClassSections: time 0.005744/0.957, allocations: 2.313 MB / 1.003 GB, free: 0.5469 MB / 0.7169 GB
Notification: Performance of NFFlatten.flatten: time 0.007896/0.965, allocations: 5.779 MB / 1.009 GB, free: 10.75 MB / 0.7325 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.002714/0.9677, allocations: 2.215 MB / 1.011 GB, free: 8.484 MB / 0.7325 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.006179/0.9739, allocations: 3.094 MB / 1.014 GB, free: 5.379 MB / 0.7325 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.003541/0.9774, allocations: 1.815 MB / 1.016 GB, free: 3.562 MB / 0.7325 GB
Notification: Performance of NFPackage.collectConstants: time 0.0003892/0.9778, allocations: 240 kB / 1.016 GB, free: 3.328 MB / 0.7325 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.006828/0.9847, allocations: 3.804 MB / 1.02 GB, free: 15.52 MB / 0.7481 GB
Notification: Performance of NFScalarize.scalarize: time 0.0009931/0.9857, allocations: 0.927 MB / 1.021 GB, free: 14.59 MB / 0.7481 GB
Notification: Performance of NFVerifyModel.verify: time 0.001698/0.9874, allocations: 1.407 MB / 1.022 GB, free: 13.17 MB / 0.7481 GB
Notification: Performance of NFConvertDAE.convert: time 0.009147/0.9966, allocations: 5.12 MB / 1.027 GB, free: 8.035 MB / 0.7481 GB
Notification: Performance of FrontEnd - DAE generated: time 4.157e-06/0.9966, allocations: 4 kB / 1.027 GB, free: 8.031 MB / 0.7481 GB
Notification: Performance of FrontEnd: time 2.084e-06/0.9966, allocations: 0 / 1.027 GB, free: 8.031 MB / 0.7481 GB
Notification: Performance of Transformations before backend: time 6.074e-05/0.9967, allocations: 0 / 1.027 GB, free: 8.031 MB / 0.7481 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 349
 * Number of variables: 349
Notification: Performance of Generate backend data structure: time 0.005233/1.002, allocations: 3.197 MB / 1.03 GB, free: 4.766 MB / 0.7481 GB
Notification: Performance of prepare preOptimizeDAE: time 4.127e-05/1.002, allocations: 12.03 kB / 1.03 GB, free: 4.754 MB / 0.7481 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.005196/1.007, allocations: 0.8606 MB / 1.031 GB, free: 3.891 MB / 0.7481 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.004297/1.011, allocations: 2.193 MB / 1.033 GB, free: 1.625 MB / 0.7481 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 8.461e-05/1.012, allocations: 118.8 kB / 1.033 GB, free: 1.508 MB / 0.7481 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002117/1.012, allocations: 152 kB / 1.033 GB, free: 1.359 MB / 0.7481 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.002963/1.015, allocations: 1.706 MB / 1.035 GB, free: 15.59 MB / 0.7637 GB
Notification: Performance of preOpt findStateOrder (simulation): time 3.209e-05/1.015, allocations: 0 / 1.035 GB, free: 15.59 MB / 0.7637 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000129/1.015, allocations: 63.94 kB / 1.035 GB, free: 15.52 MB / 0.7637 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.615e-05/1.015, allocations: 46.64 kB / 1.035 GB, free: 15.48 MB / 0.7637 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00263/1.018, allocations: 1.31 MB / 1.036 GB, free: 14.16 MB / 0.7637 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 0.009016/1.027, allocations: 7.877 MB / 1.044 GB, free: 5.695 MB / 0.7637 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.002263/1.029, allocations: 0.9299 MB / 1.045 GB, free: 4.754 MB / 0.7637 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.001097/1.03, allocations: 0.5351 MB / 1.046 GB, free: 4.219 MB / 0.7637 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0001875/1.03, allocations: 113.7 kB / 1.046 GB, free: 4.09 MB / 0.7637 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 2.673e-05/1.03, allocations: 39.22 kB / 1.046 GB, free: 4.043 MB / 0.7637 GB
Notification: Performance of pre-optimization done (n=77): time 2.565e-06/1.03, allocations: 4 kB / 1.046 GB, free: 4.039 MB / 0.7637 GB
Notification: Performance of matching and sorting (n=77): time 0.004493/1.035, allocations: 1.773 MB / 1.047 GB, free: 2.219 MB / 0.7637 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 3.508e-05/1.035, allocations: 64.06 kB / 1.047 GB, free: 2.145 MB / 0.7637 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002071/1.037, allocations: 1.868 MB / 1.049 GB, free: 252 kB / 0.7637 GB
Notification: Performance of collectPreVariables (initialization): time 8.685e-05/1.037, allocations: 41.7 kB / 1.049 GB, free: 204 kB / 0.7637 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0007388/1.038, allocations: 1.029 MB / 1.05 GB, free: 15.16 MB / 0.7794 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0002183/1.038, allocations: 289.5 kB / 1.051 GB, free: 14.88 MB / 0.7794 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003398/1.038, allocations: 238.8 kB / 1.051 GB, free: 14.63 MB / 0.7794 GB
Notification: Performance of setup shared object (initialization): time 0.0001176/1.038, allocations: 353.9 kB / 1.051 GB, free: 14.28 MB / 0.7794 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.001014/1.039, allocations: 0.5174 MB / 1.052 GB, free: 13.76 MB / 0.7794 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.00127/1.041, allocations: 0.9409 MB / 1.053 GB, free: 12.65 MB / 0.7794 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.002271/1.043, allocations: 1.384 MB / 1.054 GB, free: 11.14 MB / 0.7794 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 6.512e-06/1.043, allocations: 3.938 kB / 1.054 GB, free: 11.14 MB / 0.7794 GB
Notification: Performance of matching and sorting (n=131) (initialization): time 0.003112/1.046, allocations: 1.74 MB / 1.056 GB, free: 9.383 MB / 0.7794 GB
Notification: Performance of prepare postOptimizeDAE: time 2.487e-05/1.046, allocations: 12 kB / 1.056 GB, free: 9.371 MB / 0.7794 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.563e-05/1.046, allocations: 8.406 kB / 1.056 GB, free: 9.363 MB / 0.7794 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0008557/1.047, allocations: 285.4 kB / 1.056 GB, free: 9.078 MB / 0.7794 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001004/1.048, allocations: 247.6 kB / 1.056 GB, free: 8.836 MB / 0.7794 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001184/1.049, allocations: 1.859 MB / 1.058 GB, free: 6.902 MB / 0.7794 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001242/1.051, allocations: 131.1 kB / 1.058 GB, free: 6.773 MB / 0.7794 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001322/1.051, allocations: 67.97 kB / 1.058 GB, free: 6.707 MB / 0.7794 GB
Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001566/1.052, allocations: 0.9085 MB / 1.059 GB, free: 5.793 MB / 0.7794 GB
Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001226/1.054, allocations: 0.8494 MB / 1.06 GB, free: 4.766 MB / 0.7794 GB
Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.001979/1.056, allocations: 1.24 MB / 1.061 GB, free: 3.395 MB / 0.7794 GB
Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 7.765e-06/1.056, allocations: 4 kB / 1.061 GB, free: 3.391 MB / 0.7794 GB
Notification: Performance of matching and sorting (n=131) (initialization_lambda0): time 0.003168/1.059, allocations: 1.634 MB / 1.063 GB, free: 1.742 MB / 0.7794 GB
Notification: Performance of prepare postOptimizeDAE: time 1.785e-05/1.059, allocations: 8 kB / 1.063 GB, free: 1.734 MB / 0.7794 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.804e-05/1.059, allocations: 16.33 kB / 1.063 GB, free: 1.719 MB / 0.7794 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.001055/1.06, allocations: 305.5 kB / 1.063 GB, free: 1.414 MB / 0.7794 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0008163/1.061, allocations: 215.7 kB / 1.063 GB, free: 1.203 MB / 0.7794 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.004831/1.065, allocations: 3.753 MB / 1.067 GB, free: 13.21 MB / 0.795 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001315/1.067, allocations: 111.5 kB / 1.067 GB, free: 13.1 MB / 0.795 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000123/1.067, allocations: 59.98 kB / 1.067 GB, free: 13.04 MB / 0.795 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 42
 * 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 (116):
 * Single equations (assignments): 111
 * Array equations: 2
 * 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
   {(1,7), (1,4)}
Notification: Performance of prepare postOptimizeDAE: time 0.0003259/1.067, allocations: 242.5 kB / 1.067 GB, free: 12.8 MB / 0.795 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0003542/1.068, allocations: 214.6 kB / 1.067 GB, free: 12.59 MB / 0.795 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002984/1.071, allocations: 1.285 MB / 1.069 GB, free: 11.28 MB / 0.795 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.408e-05/1.071, allocations: 8 kB / 1.069 GB, free: 11.27 MB / 0.795 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 4.228e-06/1.071, allocations: 0 / 1.069 GB, free: 11.27 MB / 0.795 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.00235/1.073, allocations: 1.083 MB / 1.07 GB, free: 10.15 MB / 0.795 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005685/1.079, allocations: 2.955 MB / 1.073 GB, free: 7.102 MB / 0.795 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 6.923e-06/1.079, allocations: 4 kB / 1.073 GB, free: 7.098 MB / 0.795 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0008915/1.08, allocations: 179.7 kB / 1.073 GB, free: 6.922 MB / 0.795 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.000513/1.08, allocations: 177.6 kB / 1.073 GB, free: 6.742 MB / 0.795 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 6.765e-05/1.08, allocations: 23.98 kB / 1.073 GB, free: 6.719 MB / 0.795 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001072/1.081, allocations: 1.831 MB / 1.075 GB, free: 4.812 MB / 0.795 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.31e-06/1.081, allocations: 8.016 kB / 1.075 GB, free: 4.805 MB / 0.795 GB
Notification: Performance of postOpt symbolicJacobian (simulation): time 0.003604/1.085, allocations: 1.837 MB / 1.077 GB, free: 2.934 MB / 0.795 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.0006501/1.086, allocations: 379.5 kB / 1.077 GB, free: 2.543 MB / 0.795 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.000276/1.086, allocations: 19.94 kB / 1.077 GB, free: 2.523 MB / 0.795 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009375/1.087, allocations: 51.89 kB / 1.077 GB, free: 2.473 MB / 0.795 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001105/1.087, allocations: 48.53 kB / 1.077 GB, free: 2.426 MB / 0.795 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.763e-05/1.087, allocations: 35.97 kB / 1.077 GB, free: 2.391 MB / 0.795 GB
Notification: Performance of sorting global known variables: time 0.001723/1.089, allocations: 1.269 MB / 1.078 GB, free: 1.105 MB / 0.795 GB
Notification: Performance of sort global known variables: time 1.2e-07/1.089, allocations: 0 / 1.078 GB, free: 1.105 MB / 0.795 GB
Notification: Performance of remove unused functions: time 0.002527/1.091, allocations: 1.099 MB / 1.079 GB, free: 4 kB / 0.795 GB
Notification: Model statistics after passing the back-end for simulation:
 * Number of independent subsystems: 5
 * Number of states: 3 (floMacDyn.vol.dynBal.U,floMacDyn.vol.dynBal.m,floMacDyn.vol.dynBal.mXi[1])
 * 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 (69):
 * Single equations (assignments): 66
 * 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
   {(1,5), (2,6)}
Notification: Performance of Backend phase and start with SimCode phase: time 0.001093/1.092, allocations: 475.5 kB / 1.08 GB, free: 15.54 MB / 0.8106 GB
Notification: Performance of simCode: created initialization part: time 0.004169/1.097, allocations: 1.996 MB / 1.082 GB, free: 13.54 MB / 0.8106 GB
Notification: Performance of simCode: created event and clocks part: time 4.428e-06/1.097, allocations: 0 / 1.082 GB, free: 13.54 MB / 0.8106 GB
Notification: Performance of simCode: created simulation system equations: time 0.001177/1.098, allocations: 0.5114 MB / 1.082 GB, free: 13.03 MB / 0.8106 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.004349/1.102, allocations: 1.104 MB / 1.083 GB, free: 11.98 MB / 0.8106 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.006538/1.109, allocations: 3.663 MB / 1.087 GB, free: 8.273 MB / 0.8106 GB
Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001625/1.11, allocations: 1.606 MB / 1.089 GB, free: 6.637 MB / 0.8106 GB
Notification: Performance of simCode: alias equations: time 0.001877/1.112, allocations: 0.4897 MB / 1.089 GB, free: 6.145 MB / 0.8106 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0004205/1.113, allocations: 147.4 kB / 1.089 GB, free: 6 MB / 0.8106 GB
Notification: Performance of SimCode: time 6.61e-07/1.113, allocations: 0 / 1.089 GB, free: 6 MB / 0.8106 GB
Notification: Performance of Templates: time 0.07448/1.187, allocations: 45.46 MB / 1.134 GB, free: 9.043 MB / 0.8575 GB
make -j1 -f IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y.makefile
(rm -f IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y.pipe ; mkfifo IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y.pipe >> ../files/IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y.sim & ./IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y  -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.Movers.Validation.SpeedControlled_y.pipe 2>&1)