Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI.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/Modelica 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/OpenIPSL 3.1.0-master/package.mo", uses=false) Using package OpenIPSL with version 3.1.0-dev (/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/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 Modelica with version 4.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 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(OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI") translateModel(OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001018/0.001018, allocations: 90.75 kB / 15.36 MB, free: 0.7383 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.391/1.391, allocations: 223.3 MB / 239.4 MB, free: 5.523 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00121/0.00121, allocations: 168.6 kB / 290.6 MB, free: 2.199 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo): time 0.5173/0.5173, allocations: 91.93 MB / 433.6 MB, free: 10.34 MB / 302.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0003775/0.0003776, allocations: 12 kB / 0.5048 GB, free: 7.312 MB / 382.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3825/0.3829, allocations: 72.47 MB / 0.5755 GB, free: 36.69 MB / 430.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI): time 0.004982/0.3879, allocations: 6.281 MB / 0.5817 GB, free: 32.51 MB / 430.1 MB Notification: Performance of NFInst.instExpressions: time 0.003679/0.3916, allocations: 2.027 MB / 0.5836 GB, free: 31.08 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.000562/0.3922, allocations: 17.41 kB / 0.5837 GB, free: 31.07 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0006055/0.3929, allocations: 185.4 kB / 0.5838 GB, free: 31 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.001613/0.3945, allocations: 0.7117 MB / 0.5845 GB, free: 30.55 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.001132/0.3956, allocations: 0.5962 MB / 0.5851 GB, free: 30.23 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.001131/0.3968, allocations: 1.471 MB / 0.5865 GB, free: 29.53 MB / 430.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0004093/0.3972, allocations: 285.2 kB / 0.5868 GB, free: 29.41 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0005312/0.3977, allocations: 0.5544 MB / 0.5874 GB, free: 29.16 MB / 430.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0006133/0.3983, allocations: 0.7394 MB / 0.5881 GB, free: 28.83 MB / 430.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001121/0.3985, allocations: 57.75 kB / 0.5881 GB, free: 28.83 MB / 430.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0004167/0.3989, allocations: 190.6 kB / 0.5883 GB, free: 28.79 MB / 430.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0002071/0.3991, allocations: 264.5 kB / 0.5886 GB, free: 28.64 MB / 430.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0004311/0.3995, allocations: 0.6145 MB / 0.5892 GB, free: 28.23 MB / 430.1 MB Notification: Performance of NFConvertDAE.convert: time 0.001188/0.4007, allocations: 1.532 MB / 0.5907 GB, free: 27.66 MB / 430.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.438e-06/0.4007, allocations: 1.031 kB / 0.5907 GB, free: 27.66 MB / 430.1 MB Notification: Performance of FrontEnd: time 2.185e-06/0.4008, allocations: 0 / 0.5907 GB, free: 27.66 MB / 430.1 MB Notification: Performance of Transformations before backend: time 1.42e-05/0.4008, allocations: 2.5 kB / 0.5907 GB, free: 27.66 MB / 430.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 187 * Number of variables: 187 Notification: Performance of Generate backend data structure: time 0.008263/0.409, allocations: 2.476 MB / 0.5931 GB, free: 26.54 MB / 430.1 MB Notification: Performance of prepare preOptimizeDAE: time 5.045e-05/0.4091, allocations: 9.656 kB / 0.5931 GB, free: 26.54 MB / 430.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.00508/0.4142, allocations: 0.7751 MB / 0.5939 GB, free: 26.39 MB / 430.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.001679/0.4159, allocations: 0.8812 MB / 0.5947 GB, free: 25.8 MB / 430.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002625/0.4162, allocations: 242.6 kB / 0.5949 GB, free: 25.6 MB / 430.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001868/0.4164, allocations: 82.22 kB / 0.595 GB, free: 25.57 MB / 430.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002278/0.4187, allocations: 1.161 MB / 0.5962 GB, free: 25.14 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 2.487e-05/0.4187, allocations: 1.281 kB / 0.5962 GB, free: 25.14 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 9.376e-05/0.4188, allocations: 29.47 kB / 0.5962 GB, free: 25.12 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 2.591e-05/0.4188, allocations: 22.06 kB / 0.5962 GB, free: 25.12 MB / 430.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.002207/0.421, allocations: 1.067 MB / 0.5972 GB, free: 24.78 MB / 430.1 MB 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 0.007454/0.4285, allocations: 3.975 MB / 0.6011 GB, free: 22.51 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.008476/0.437, allocations: 2.885 MB / 0.6039 GB, free: 21.63 MB / 430.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.001858/0.4389, allocations: 0.7556 MB / 0.6047 GB, free: 21.35 MB / 430.1 MB Notification: Performance of preOpt evalFunc (simulation): time 9.59e-05/0.439, allocations: 16.84 kB / 0.6047 GB, free: 21.35 MB / 430.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.483e-05/0.439, allocations: 45.22 kB / 0.6047 GB, free: 21.3 MB / 430.1 MB Notification: Performance of pre-optimization done (n=93): time 3.156e-06/0.4391, allocations: 0 / 0.6047 GB, free: 21.3 MB / 430.1 MB Notification: Performance of matching and sorting (n=93): time 0.03142/0.4705, allocations: 8.348 MB / 0.6129 GB, free: 19.85 MB / 430.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 7.12e-05/0.4706, allocations: 144.4 kB / 0.613 GB, free: 19.69 MB / 430.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.002071/0.4727, allocations: 1.074 MB / 0.6141 GB, free: 19.25 MB / 430.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0003056/0.473, allocations: 46.64 kB / 0.6141 GB, free: 19.2 MB / 430.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0003849/0.4734, allocations: 498.5 kB / 0.6146 GB, free: 18.81 MB / 430.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.0003813/0.4738, allocations: 350.1 kB / 0.6149 GB, free: 18.54 MB / 430.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.000228/0.474, allocations: 137.6 kB / 0.6151 GB, free: 18.47 MB / 430.1 MB Notification: Performance of setup shared object (initialization): time 6.593e-05/0.4741, allocations: 301.8 kB / 0.6154 GB, free: 18.17 MB / 430.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001837/0.4759, allocations: 0.8217 MB / 0.6162 GB, free: 17.89 MB / 430.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.00186/0.4778, allocations: 0.9978 MB / 0.6171 GB, free: 17.45 MB / 430.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.02342/0.5012, allocations: 5.999 MB / 0.623 GB, free: 12.55 MB / 430.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.016e-05/0.5013, allocations: 0 / 0.623 GB, free: 12.55 MB / 430.1 MB Notification: Performance of matching and sorting (n=186) (initialization): time 0.01357/0.5149, allocations: 5.156 MB / 0.628 GB, free: 7.371 MB / 430.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.0001409/0.5151, allocations: 234.6 kB / 0.6283 GB, free: 7.086 MB / 430.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 1.345e-05/0.5151, allocations: 4 kB / 0.6283 GB, free: 7.082 MB / 430.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.005615/0.5207, allocations: 1.809 MB / 0.63 GB, free: 5.27 MB / 430.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001536/0.5223, allocations: 287.6 kB / 0.6303 GB, free: 4.988 MB / 430.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01906/0.5413, allocations: 8.578 MB / 0.6387 GB, free: 12.26 MB / 446.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002215/0.5436, allocations: 230.7 kB / 0.6389 GB, free: 12.03 MB / 446.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001402/0.5438, allocations: 51.97 kB / 0.6389 GB, free: 11.98 MB / 446.1 MB Notification: Performance of prepare postOptimizeDAE: time 9.689e-06/0.5438, allocations: 4 kB / 0.6389 GB, free: 11.98 MB / 446.1 MB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01456/0.5583, allocations: 4.996 MB / 0.6438 GB, free: 6.957 MB / 446.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.925e-05/0.5584, allocations: 4 kB / 0.6438 GB, free: 6.953 MB / 446.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.005955/0.5644, allocations: 1.804 MB / 0.6456 GB, free: 5.145 MB / 446.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001529/0.5659, allocations: 267.6 kB / 0.6458 GB, free: 4.883 MB / 446.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.01969/0.5856, allocations: 8.591 MB / 0.6542 GB, free: 12.14 MB / 462.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.002115/0.5878, allocations: 195 kB / 0.6544 GB, free: 11.95 MB / 462.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.000116/0.5879, allocations: 55.97 kB / 0.6545 GB, free: 11.89 MB / 462.1 MB Warning: Assuming fixed start value for the following 4 variables: order4.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real order2.delta:VARIABLE(flow=false start = order2.delta0 unit = "rad" fixed = true ) "Rotor angle" type: Real order4.delta:VARIABLE(flow=false start = order4.delta0 unit = "rad" fixed = true ) "Rotor angle" type: Real order4.e1q:VARIABLE(start = order4.e1q0 unit = "1" fixed = true ) "q-axis transient voltage" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 13 * 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 (156): * Single equations (assignments): 153 * Array equations: 0 * Algorithm blocks: 2 * 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): 1 system {(20,11,23.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of prepare postOptimizeDAE: time 0.0008232/0.5888, allocations: 383 kB / 0.6548 GB, free: 11.51 MB / 462.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002577/0.589, allocations: 126.4 kB / 0.655 GB, free: 11.38 MB / 462.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01366/0.6027, allocations: 4.606 MB / 0.6595 GB, free: 6.746 MB / 462.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 2.012e-05/0.6028, allocations: 8 kB / 0.6595 GB, free: 6.738 MB / 462.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.487e-05/0.6028, allocations: 8 kB / 0.6595 GB, free: 6.73 MB / 462.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 2.82e-05/0.6028, allocations: 3.984 kB / 0.6595 GB, free: 6.727 MB / 462.1 MB 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 postOpt removeSimpleEquations (simulation): time 0.01618/0.619, allocations: 6.249 MB / 0.6656 GB, free: 380 kB / 462.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.244e-05/0.6191, allocations: 4 kB / 0.6656 GB, free: 376 kB / 462.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000731/0.6198, allocations: 115.9 kB / 0.6657 GB, free: 260 kB / 462.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.005707/0.6255, allocations: 1.8 MB / 0.6675 GB, free: 14.45 MB / 478.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0001952/0.6257, allocations: 27.98 kB / 0.6675 GB, free: 14.42 MB / 478.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0175/0.6432, allocations: 7.609 MB / 0.6749 GB, free: 6.676 MB / 478.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.628e-06/0.6433, allocations: 4 kB / 0.6749 GB, free: 6.672 MB / 478.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01564/0.6589, allocations: 5.517 MB / 0.6803 GB, free: 1.121 MB / 478.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0005913/0.6596, allocations: 227.3 kB / 0.6805 GB, free: 0.8789 MB / 478.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0001658/0.6597, allocations: 20 kB / 0.6805 GB, free: 0.8594 MB / 478.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001176/0.6609, allocations: 139.9 kB / 0.6807 GB, free: 0.7227 MB / 478.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0005427/0.6615, allocations: 176.7 kB / 0.6808 GB, free: 0.5508 MB / 478.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 7.136e-05/0.6616, allocations: 20 kB / 0.6809 GB, free: 0.5312 MB / 478.1 MB Notification: Performance of sorting global known variables: time 0.001066/0.6626, allocations: 0.7272 MB / 0.6816 GB, free: 15.8 MB / 494.1 MB Notification: Performance of sort global known variables: time 2.1e-07/0.6626, allocations: 4 kB / 0.6816 GB, free: 15.79 MB / 494.1 MB Notification: Performance of remove unused functions: time 0.002031/0.6647, allocations: 0.7491 MB / 0.6823 GB, free: 15.04 MB / 494.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 2 * Number of states: 10 (order2.delta,order2.w,order4.delta,order4.w,order4.e1q,order4.e1d,aVRTypeIchange1_1.firstOrder.y,aVRTypeIchange1_1.firstOrder2.y,aVRTypeIchange1_1.transferFunction.x_scaled[1],aVRTypeIchange1_1.transferFunction.x_scaled[2]) * 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 (67): * Single equations (assignments): 65 * Array equations: 0 * Algorithm blocks: 1 * 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): 1 system {(20,12,23.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 0 systems Notification: Performance of Backend phase and start with SimCode phase: time 0.0002943/0.665, allocations: 137.8 kB / 0.6824 GB, free: 14.9 MB / 494.1 MB Notification: Performance of simCode: created initialization part: time 0.01159/0.6766, allocations: 4.878 MB / 0.6872 GB, free: 9.953 MB / 494.1 MB Notification: Performance of simCode: created event and clocks part: time 5.681e-06/0.6766, allocations: 3.938 kB / 0.6872 GB, free: 9.949 MB / 494.1 MB Notification: Performance of simCode: created simulation system equations: time 0.004507/0.6811, allocations: 1.679 MB / 0.6888 GB, free: 8.242 MB / 494.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.001184/0.6823, allocations: 124.4 kB / 0.689 GB, free: 8.121 MB / 494.1 MB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004118/0.6865, allocations: 2.811 MB / 0.6917 GB, free: 5.289 MB / 494.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006314/0.6871, allocations: 1.133 MB / 0.6928 GB, free: 4.125 MB / 494.1 MB Notification: Performance of simCode: alias equations: time 0.0006301/0.6878, allocations: 155.7 kB / 0.693 GB, free: 3.969 MB / 494.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0002522/0.688, allocations: 75.42 kB / 0.693 GB, free: 3.895 MB / 494.1 MB Notification: Performance of SimCode: time 7.11e-07/0.688, allocations: 0 / 0.693 GB, free: 3.895 MB / 494.1 MB Notification: Performance of Templates: time 0.03974/0.7278, allocations: 26.25 MB / 0.7187 GB, free: 9.652 MB / 0.5137 GB make -j1 -f OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI.makefile (rm -f OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI.pipe ; mkfifo OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI.pipe ; head -c 1048576 < OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI.pipe >> ../files/OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI.sim & ./OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.TwoAreaOld.FourthOrder_AVRI.pipe 2>&1)