Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal.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.Examples.ResistanceVolumeFlowReversal,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal") translateModel(IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.007134/0.007134, allocations: 103 kB / 15.73 MB, free: 6.051 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001338/0.001338, allocations: 193 kB / 16.67 MB, free: 5.98 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.497/1.497, allocations: 222.9 MB / 240.4 MB, free: 4.332 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/IDEAS 3.0.0/package.mo): time 0.741/0.741, allocations: 132.2 MB / 422.7 MB, free: 1.691 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001367/0.001367, allocations: 67.89 kB / 0.5813 GB, free: 7.562 MB / 494.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.442/0.4434, allocations: 80.19 MB / 0.6596 GB, free: 10.34 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 pump.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.Examples.ResistanceVolumeFlowReversal): time 0.08356/0.527, allocations: 80.55 MB / 0.7383 GB, free: 5.484 MB / 0.5606 GB Notification: Performance of NFInst.instExpressions: time 0.0289/0.5559, allocations: 19.22 MB / 0.7571 GB, free: 2.211 MB / 0.5762 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.004109/0.5601, allocations: 107.4 kB / 0.7572 GB, free: 2.105 MB / 0.5762 GB Notification: Performance of NFTyping.typeComponents: time 0.003891/0.564, allocations: 1.157 MB / 0.7583 GB, free: 0.9453 MB / 0.5762 GB Notification: Performance of NFTyping.typeBindings: time 0.008783/0.5728, allocations: 2.865 MB / 0.7611 GB, free: 14.07 MB / 0.5919 GB Notification: Performance of NFTyping.typeClassSections: time 0.006426/0.5793, allocations: 2.418 MB / 0.7635 GB, free: 11.67 MB / 0.5919 GB Notification: Performance of NFFlatten.flatten: time 0.01779/0.5971, allocations: 15.53 MB / 0.7786 GB, free: 12.1 MB / 0.6075 GB Notification: Performance of NFFlatten.resolveConnections: time 0.009555/0.6067, allocations: 7.213 MB / 0.7857 GB, free: 4.789 MB / 0.6075 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01224/0.6189, allocations: 5.973 MB / 0.7915 GB, free: 14.83 MB / 0.6231 GB Notification: Performance of NFSimplifyModel.simplify: time 0.008557/0.6275, allocations: 5.058 MB / 0.7964 GB, free: 9.75 MB / 0.6231 GB Notification: Performance of NFPackage.collectConstants: time 0.002129/0.6296, allocations: 0.5352 MB / 0.797 GB, free: 9.215 MB / 0.6231 GB Notification: Performance of NFFlatten.collectFunctions: time 0.006038/0.6357, allocations: 1.799 MB / 0.7987 GB, free: 7.414 MB / 0.6231 GB Notification: Performance of NFScalarize.scalarize: time 0.003215/0.6389, allocations: 1.62 MB / 0.8003 GB, free: 5.789 MB / 0.6231 GB Notification: Performance of NFVerifyModel.verify: time 0.007684/0.6466, allocations: 3.293 MB / 0.8035 GB, free: 2.48 MB / 0.6231 GB Notification: Performance of NFConvertDAE.convert: time 0.01441/0.6611, allocations: 9.077 MB / 0.8124 GB, free: 9.379 MB / 0.6387 GB Notification: Performance of FrontEnd - DAE generated: time 7.123e-06/0.6611, allocations: 0 / 0.8124 GB, free: 9.379 MB / 0.6387 GB Notification: Performance of FrontEnd: time 3.516e-06/0.6611, allocations: 7.984 kB / 0.8124 GB, free: 9.371 MB / 0.6387 GB Notification: Performance of Transformations before backend: time 0.000331/0.6615, allocations: 0 / 0.8124 GB, free: 9.371 MB / 0.6387 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 834 * Number of variables: 834 Notification: Performance of Generate backend data structure: time 0.0172/0.6787, allocations: 6.482 MB / 0.8187 GB, free: 2.797 MB / 0.6387 GB Notification: Performance of prepare preOptimizeDAE: time 4.084e-05/0.6787, allocations: 12.03 kB / 0.8187 GB, free: 2.785 MB / 0.6387 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.003888/0.6826, allocations: 0.8244 MB / 0.8195 GB, free: 1.953 MB / 0.6387 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.01073/0.6934, allocations: 5.342 MB / 0.8248 GB, free: 12.53 MB / 0.6544 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002027/0.6936, allocations: 262.5 kB / 0.825 GB, free: 12.27 MB / 0.6544 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0007164/0.6943, allocations: 336 kB / 0.8253 GB, free: 11.95 MB / 0.6544 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.008924/0.7033, allocations: 5.707 MB / 0.8309 GB, free: 5.992 MB / 0.6544 GB Notification: Performance of preOpt findStateOrder (simulation): time 6.564e-05/0.7034, allocations: 11.88 kB / 0.8309 GB, free: 5.98 MB / 0.6544 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003887/0.7038, allocations: 147.9 kB / 0.8311 GB, free: 5.836 MB / 0.6544 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.951e-05/0.7039, allocations: 114 kB / 0.8312 GB, free: 5.723 MB / 0.6544 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.008328/0.7122, allocations: 5.522 MB / 0.8366 GB, free: 192 kB / 0.6544 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 0.03413/0.7464, allocations: 23.68 MB / 0.8597 GB, free: 7.434 MB / 0.6856 GB Notification: Performance of preOpt comSubExp (simulation): time 0.005275/0.7517, allocations: 2.742 MB / 0.8624 GB, free: 4.699 MB / 0.6856 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002722/0.7544, allocations: 1.897 MB / 0.8642 GB, free: 2.801 MB / 0.6856 GB Notification: Performance of preOpt evalFunc (simulation): time 0.3887/1.143, allocations: 7.079 MB / 0.8711 GB, free: 181.3 MB / 0.6856 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.003314/1.146, allocations: 1.922 MB / 0.873 GB, free: 180.7 MB / 0.6856 GB Notification: Performance of preOpt simplifyInStream (simulation): time 0.003655/1.15, allocations: 0.7006 MB / 0.8737 GB, free: 180.6 MB / 0.6856 GB Notification: Performance of pre-optimization done (n=155): time 7.764e-06/1.15, allocations: 0 / 0.8737 GB, free: 180.6 MB / 0.6856 GB Notification: Performance of matching and sorting (n=155): time 0.02383/1.174, allocations: 7.923 MB / 0.8814 GB, free: 178.1 MB / 0.6856 GB Notification: Performance of inlineWhenForInitialization (initialization): time 7.136e-05/1.174, allocations: 79.53 kB / 0.8815 GB, free: 178 MB / 0.6856 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.009351/1.183, allocations: 5.008 MB / 0.8864 GB, free: 175.6 MB / 0.6856 GB Notification: Performance of collectPreVariables (initialization): time 0.000831/1.184, allocations: 62.89 kB / 0.8865 GB, free: 175.5 MB / 0.6856 GB Notification: Performance of collectInitialEqns (initialization): time 0.002346/1.187, allocations: 2.456 MB / 0.8889 GB, free: 173.8 MB / 0.6856 GB Notification: Performance of collectInitialBindings (initialization): time 0.001084/1.188, allocations: 0.5629 MB / 0.8894 GB, free: 173.3 MB / 0.6856 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.00129/1.189, allocations: 0.6582 MB / 0.89 GB, free: 172.9 MB / 0.6856 GB Notification: Performance of setup shared object (initialization): time 6.187e-05/1.189, allocations: 302.1 kB / 0.8903 GB, free: 172.6 MB / 0.6856 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002982/1.192, allocations: 1.718 MB / 0.892 GB, free: 171.7 MB / 0.6856 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003965/1.196, allocations: 2.914 MB / 0.8949 GB, free: 169.2 MB / 0.6856 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.006701/1.203, allocations: 4.674 MB / 0.8994 GB, free: 166 MB / 0.6856 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.383e-05/1.203, allocations: 10.69 kB / 0.8994 GB, free: 166 MB / 0.6856 GB Notification: Performance of matching and sorting (n=336) (initialization): time 0.01165/1.215, allocations: 6.304 MB / 0.9056 GB, free: 162.7 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 5.664e-05/1.215, allocations: 47.48 kB / 0.9056 GB, free: 162.6 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.343e-05/1.215, allocations: 31.66 kB / 0.9057 GB, free: 162.6 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.07137/1.286, allocations: 13.55 MB / 0.9189 GB, free: 154.2 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002841/1.289, allocations: 0.6474 MB / 0.9195 GB, free: 153.5 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008499/1.298, allocations: 5.483 MB / 0.9249 GB, free: 147.9 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004755/1.302, allocations: 216.5 kB / 0.9251 GB, free: 147.7 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006228/1.303, allocations: 195.8 kB / 0.9253 GB, free: 147.5 MB / 0.6856 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.004351/1.307, allocations: 2.956 MB / 0.9282 GB, free: 144.6 MB / 0.6856 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.002528/1.31, allocations: 2.844 MB / 0.9309 GB, free: 141.2 MB / 0.6856 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.004668/1.315, allocations: 4.546 MB / 0.9354 GB, free: 136.2 MB / 0.6856 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 1.656e-05/1.315, allocations: 12 kB / 0.9354 GB, free: 136.2 MB / 0.6856 GB Notification: Performance of matching and sorting (n=336) (initialization_lambda0): time 0.009168/1.324, allocations: 5.999 MB / 0.9412 GB, free: 130.1 MB / 0.6856 GB Notification: Performance of prepare postOptimizeDAE: time 4.275e-05/1.324, allocations: 45.7 kB / 0.9413 GB, free: 130.1 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.187e-05/1.324, allocations: 32 kB / 0.9413 GB, free: 130 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.06808/1.392, allocations: 13.31 MB / 0.9543 GB, free: 116.8 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002591/1.395, allocations: 0.6396 MB / 0.9549 GB, free: 116.1 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01071/1.405, allocations: 8.911 MB / 0.9636 GB, free: 106.9 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004071/1.409, allocations: 221 kB / 0.9639 GB, free: 106.7 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003221/1.41, allocations: 187.8 kB / 0.964 GB, free: 106.5 MB / 0.6856 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 150 * Number of states: 0 () * Number of discrete variables: 7 (pulse.count,$PRE.pulse.count,pulse.T_start,$PRE.pulse.T_start,$whenCondition1,nRes.y,allowFlowReversal.y) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (283): * Single equations (assignments): 278 * Array equations: 1 * Algorithm blocks: 1 * Record equations: 0 * 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 {(11,15), (10,11), (2,5)} Notification: Performance of prepare postOptimizeDAE: time 0.0008327/1.411, allocations: 371.4 kB / 0.9644 GB, free: 106.1 MB / 0.6856 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0008958/1.412, allocations: 470.1 kB / 0.9648 GB, free: 105.7 MB / 0.6856 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.00687/1.418, allocations: 4.569 MB / 0.9693 GB, free: 101.1 MB / 0.6856 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.655e-05/1.418, allocations: 16 kB / 0.9693 GB, free: 101.1 MB / 0.6856 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 3.366e-06/1.418, allocations: 0 / 0.9693 GB, free: 101.1 MB / 0.6856 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.008475/1.427, allocations: 5.624 MB / 0.9748 GB, free: 95.21 MB / 0.6856 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02263/1.45, allocations: 10.73 MB / 0.9853 GB, free: 84.45 MB / 0.6856 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.234e-05/1.45, allocations: 0 / 0.9853 GB, free: 84.45 MB / 0.6856 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002039/1.452, allocations: 367.6 kB / 0.9856 GB, free: 84.09 MB / 0.6856 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.06305/1.515, allocations: 11.7 MB / 0.9971 GB, free: 72.46 MB / 0.6856 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005546/1.515, allocations: 51.95 kB / 0.9971 GB, free: 72.41 MB / 0.6856 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.00496/1.52, allocations: 3.55 MB / 1.001 GB, free: 68.79 MB / 0.6856 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 3.977e-06/1.52, allocations: 3.984 kB / 1.001 GB, free: 68.78 MB / 0.6856 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0199/1.54, allocations: 8.415 MB / 1.009 GB, free: 60.34 MB / 0.6856 GB Notification: Performance of postOpt removeConstants (simulation): time 0.002482/1.543, allocations: 0.9323 MB / 1.01 GB, free: 59.38 MB / 0.6856 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0007299/1.543, allocations: 28 kB / 1.01 GB, free: 59.36 MB / 0.6856 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.002419/1.546, allocations: 131.8 kB / 1.01 GB, free: 59.23 MB / 0.6856 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003301/1.546, allocations: 117.8 kB / 1.01 GB, free: 59.11 MB / 0.6856 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0002135/1.546, allocations: 83.92 kB / 1.01 GB, free: 59.03 MB / 0.6856 GB Notification: Performance of sorting global known variables: time 0.004258/1.551, allocations: 3.44 MB / 1.013 GB, free: 55.61 MB / 0.6856 GB Notification: Performance of sort global known variables: time 1.8e-07/1.551, allocations: 0 / 1.013 GB, free: 55.61 MB / 0.6856 GB Notification: Performance of remove unused functions: time 0.007647/1.558, allocations: 2.635 MB / 1.016 GB, free: 53 MB / 0.6856 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 3 * Number of states: 4 (pump.vol.dynBal.U,hea.outCon.T,val.filter.s[1],val.filter.s[2]) * Number of discrete variables: 3 ($whenCondition1,pulse.T_start,pulse.count) * Number of discrete states: 1 (pulse.count) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (135): * Single equations (assignments): 126 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 4 * When equations: 2 * 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 {(11,5), (2,5), (10,11)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001433/1.56, allocations: 0.5197 MB / 1.016 GB, free: 52.55 MB / 0.6856 GB Notification: Performance of simCode: created initialization part: time 0.01556/1.575, allocations: 7.407 MB / 1.024 GB, free: 45.11 MB / 0.6856 GB Notification: Performance of simCode: created event and clocks part: time 8.406e-06/1.575, allocations: 4.312 kB / 1.024 GB, free: 45.11 MB / 0.6856 GB Notification: Performance of simCode: created simulation system equations: time 0.004643/1.58, allocations: 2.29 MB / 1.026 GB, free: 42.82 MB / 0.6856 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0111/1.591, allocations: 2.72 MB / 1.029 GB, free: 40.24 MB / 0.6856 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.01502/1.606, allocations: 9.964 MB / 1.038 GB, free: 30.26 MB / 0.6856 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.001951/1.608, allocations: 3.241 MB / 1.042 GB, free: 26.99 MB / 0.6856 GB Notification: Performance of simCode: alias equations: time 0.004761/1.613, allocations: 1.648 MB / 1.043 GB, free: 25.36 MB / 0.6856 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0009615/1.614, allocations: 347.3 kB / 1.043 GB, free: 25.02 MB / 0.6856 GB Notification: Performance of SimCode: time 9.71e-07/1.614, allocations: 0 / 1.043 GB, free: 25.02 MB / 0.6856 GB Notification: Performance of Templates: time 0.164/1.778, allocations: 111.6 MB / 1.152 GB, free: 10.18 MB / 0.7794 GB make -j1 -f IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal.makefile (rm -f IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal.pipe ; mkfifo IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal.pipe ; head -c 1048576 < IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal.pipe >> ../files/IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal.sim & ./IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal -abortSlowSimulation -alarm=480 -lv LOG_STATS > IDEAS_IDEAS.Fluid.Examples.ResistanceVolumeFlowReversal.pipe 2>&1)