Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries/ --ompython_omhome=/usr OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII.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.ThreeArea.SixthOrder_AVRIII,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII") translateModel(OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001055/0.001055, allocations: 91.69 kB / 15.06 MB, free: 1.098 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.335/1.335, allocations: 223.3 MB / 239 MB, free: 5.449 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.0009727/0.0009727, allocations: 176.5 kB / 290.3 MB, free: 2.141 MB / 238.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/OpenIPSL 3.1.0-master/package.mo): time 0.4937/0.4937, allocations: 91.92 MB / 433.3 MB, free: 10.37 MB / 302.1 MB Notification: Performance of FrontEnd - loaded program: time 0.0003504/0.0003505, allocations: 12 kB / 0.5042 GB, free: 7.645 MB / 382.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3208/0.3212, allocations: 72.46 MB / 0.5749 GB, free: 36.29 MB / 430.1 MB Notification: Performance of NFInst.instantiate(OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII): time 0.007849/0.3291, allocations: 12.32 MB / 0.587 GB, free: 27.86 MB / 430.1 MB Notification: Performance of NFInst.instExpressions: time 0.006068/0.3352, allocations: 3.303 MB / 0.5902 GB, free: 25.47 MB / 430.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.002415/0.3376, allocations: 29.28 kB / 0.5902 GB, free: 25.47 MB / 430.1 MB Notification: Performance of NFTyping.typeComponents: time 0.00151/0.3392, allocations: 350.3 kB / 0.5906 GB, free: 25.32 MB / 430.1 MB Notification: Performance of NFTyping.typeBindings: time 0.004964/0.3441, allocations: 1.146 MB / 0.5917 GB, free: 24.54 MB / 430.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.003156/0.3473, allocations: 1.259 MB / 0.5929 GB, free: 23.9 MB / 430.1 MB Notification: Performance of NFFlatten.flatten: time 0.00463/0.352, allocations: 3.054 MB / 0.5959 GB, free: 22.33 MB / 430.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.001115/0.3531, allocations: 0.611 MB / 0.5965 GB, free: 22.02 MB / 430.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.00183/0.3549, allocations: 1.195 MB / 0.5976 GB, free: 21.48 MB / 430.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.001724/0.3567, allocations: 1.628 MB / 0.5992 GB, free: 20.77 MB / 430.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0003837/0.3571, allocations: 145.7 kB / 0.5994 GB, free: 20.77 MB / 430.1 MB Notification: Performance of NFFlatten.collectFunctions: time 0.0007926/0.3579, allocations: 264.2 kB / 0.5996 GB, free: 20.73 MB / 430.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0003917/0.3583, allocations: 0.5521 MB / 0.6002 GB, free: 20.4 MB / 430.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0006765/0.3589, allocations: 0.4906 MB / 0.6006 GB, free: 20.1 MB / 430.1 MB Notification: Performance of NFConvertDAE.convert: time 0.002528/0.3615, allocations: 2.704 MB / 0.6033 GB, free: 19.25 MB / 430.1 MB Notification: Performance of FrontEnd - DAE generated: time 6.813e-06/0.3615, allocations: 1.156 kB / 0.6033 GB, free: 19.25 MB / 430.1 MB Notification: Performance of FrontEnd: time 2.264e-06/0.3615, allocations: 4 kB / 0.6033 GB, free: 19.24 MB / 430.1 MB Notification: Performance of Transformations before backend: time 5.759e-05/0.3616, allocations: 0 / 0.6033 GB, free: 19.24 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: 489 * Number of variables: 489 Notification: Performance of Generate backend data structure: time 0.01927/0.3808, allocations: 5.823 MB / 0.609 GB, free: 17.22 MB / 430.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.744e-05/0.3809, allocations: 9.281 kB / 0.609 GB, free: 17.22 MB / 430.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.01489/0.3958, allocations: 2.271 MB / 0.6112 GB, free: 16.81 MB / 430.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.004453/0.4003, allocations: 1.59 MB / 0.6128 GB, free: 15.82 MB / 430.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0006141/0.4009, allocations: 0.6874 MB / 0.6134 GB, free: 15.23 MB / 430.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0005473/0.4015, allocations: 211 kB / 0.6136 GB, free: 15.16 MB / 430.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.006346/0.4079, allocations: 3.107 MB / 0.6167 GB, free: 14.09 MB / 430.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 3.309e-05/0.4079, allocations: 0 / 0.6167 GB, free: 14.09 MB / 430.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.000226/0.4081, allocations: 75.66 kB / 0.6167 GB, free: 14.04 MB / 430.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 4.307e-05/0.4082, allocations: 50.23 kB / 0.6168 GB, free: 14.03 MB / 430.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.005943/0.4141, allocations: 2.886 MB / 0.6196 GB, free: 13.12 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 0.0178/0.432, allocations: 9.909 MB / 0.6293 GB, free: 5.602 MB / 430.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.009391/0.4414, allocations: 4.81 MB / 0.634 GB, free: 0.6719 MB / 430.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0042/0.4456, allocations: 2.096 MB / 0.636 GB, free: 14.57 MB / 446.1 MB Notification: Performance of preOpt evalFunc (simulation): time 0.0003697/0.446, allocations: 37.89 kB / 0.6361 GB, free: 14.54 MB / 446.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 4.813e-05/0.4461, allocations: 64.5 kB / 0.6361 GB, free: 14.46 MB / 446.1 MB Notification: Performance of pre-optimization done (n=230): time 3.767e-06/0.4461, allocations: 4 kB / 0.6361 GB, free: 14.46 MB / 446.1 MB Notification: Performance of matching and sorting (n=230): time 0.1083/0.5544, allocations: 32.27 MB / 0.6676 GB, free: 14.12 MB / 478.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 9.338e-05/0.5545, allocations: 124.8 kB / 0.6678 GB, free: 13.98 MB / 478.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003421/0.558, allocations: 2.017 MB / 0.6697 GB, free: 11.94 MB / 478.1 MB Notification: Performance of collectPreVariables (initialization): time 0.0006567/0.5586, allocations: 65.7 kB / 0.6698 GB, free: 11.87 MB / 478.1 MB Notification: Performance of collectInitialEqns (initialization): time 0.0009739/0.5596, allocations: 1.093 MB / 0.6709 GB, free: 10.77 MB / 478.1 MB Notification: Performance of collectInitialBindings (initialization): time 0.001404/0.561, allocations: 0.8164 MB / 0.6716 GB, free: 9.938 MB / 478.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0005638/0.5616, allocations: 60 kB / 0.6717 GB, free: 9.879 MB / 478.1 MB Notification: Performance of setup shared object (initialization): time 0.0002231/0.5619, allocations: 416.2 kB / 0.6721 GB, free: 9.465 MB / 478.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.004676/0.5665, allocations: 2.095 MB / 0.6741 GB, free: 7.367 MB / 478.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.005077/0.5716, allocations: 2.465 MB / 0.6766 GB, free: 4.805 MB / 478.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.005145/0.5768, allocations: 2.249 MB / 0.6788 GB, free: 2.535 MB / 478.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.443e-05/0.5769, allocations: 0 / 0.6788 GB, free: 2.535 MB / 478.1 MB Notification: Performance of matching and sorting (n=385) (initialization): time 0.04201/0.6189, allocations: 14.97 MB / 0.6934 GB, free: 3.516 MB / 494.1 MB Notification: Performance of prepare postOptimizeDAE: time 0.0002505/0.6192, allocations: 300 kB / 0.6937 GB, free: 3.125 MB / 494.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.23e-05/0.6192, allocations: 8 kB / 0.6937 GB, free: 3.117 MB / 494.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.01958/0.6388, allocations: 6.488 MB / 0.7 GB, free: 12.62 MB / 0.4981 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002631/0.6415, allocations: 487.3 kB / 0.7005 GB, free: 12.14 MB / 0.4981 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.06407/0.7056, allocations: 26.55 MB / 0.7264 GB, free: 1.305 MB / 0.5137 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00438/0.71, allocations: 0.5402 MB / 0.7269 GB, free: 0.7617 MB / 0.5137 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006895/0.7107, allocations: 104 kB / 0.727 GB, free: 0.6602 MB / 0.5137 GB Notification: Performance of prepare postOptimizeDAE: time 1.151e-05/0.7107, allocations: 4 kB / 0.727 GB, free: 0.6562 MB / 0.5137 GB Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.04205/0.7528, allocations: 14.64 MB / 0.7413 GB, free: 1.977 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 2.758e-05/0.7529, allocations: 7.938 kB / 0.7413 GB, free: 1.969 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.01982/0.7727, allocations: 6.484 MB / 0.7477 GB, free: 11.47 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002552/0.7753, allocations: 475.3 kB / 0.7481 GB, free: 11.01 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.06346/0.8388, allocations: 26.55 MB / 0.774 GB, free: 180 kB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.2495/1.088, allocations: 0.4888 MB / 0.7745 GB, free: 155.2 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0008996/1.089, allocations: 111.2 kB / 0.7746 GB, free: 155.2 MB / 0.5606 GB Warning: Assuming fixed start value for the following 6 variables: Exc2.vref:VARIABLE(unit = "1" fixed = true protected = true ) type: Real Exc1.vref:VARIABLE(unit = "1" fixed = true protected = true ) type: Real Syn2.e2d:VARIABLE(start = Syn2.e2d0 unit = "1" fixed = true ) "d-axis sub-transient voltage" type: Real Syn2.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real order2.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real order3_2.w:VARIABLE(flow=false start = 1.0 fixed = true ) "Rotor speed [pu]" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 29 * 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 (294): * Single equations (assignments): 292 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 2 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(1,100.0%) 1} * Non-linear torn systems: 1 {64 27} Notification: Performance of prepare postOptimizeDAE: time 0.002/1.091, allocations: 0.5061 MB / 0.7751 GB, free: 155 MB / 0.5606 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0009379/1.092, allocations: 274 kB / 0.7754 GB, free: 155 MB / 0.5606 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.03645/1.129, allocations: 14.31 MB / 0.7894 GB, free: 154.8 MB / 0.5606 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.077e-05/1.129, allocations: 26.19 kB / 0.7894 GB, free: 154.7 MB / 0.5606 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 4.518e-05/1.129, allocations: 17.69 kB / 0.7894 GB, free: 154.7 MB / 0.5606 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 5.564e-05/1.129, allocations: 12.61 kB / 0.7894 GB, free: 154.7 MB / 0.5606 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 postOpt removeSimpleEquations (simulation): time 0.04425/1.173, allocations: 17.88 MB / 0.8069 GB, free: 152.1 MB / 0.5606 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.741e-05/1.173, allocations: 0.9062 kB / 0.8069 GB, free: 152.1 MB / 0.5606 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.001795/1.175, allocations: 260.5 kB / 0.8071 GB, free: 152.1 MB / 0.5606 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.01537/1.19, allocations: 6.02 MB / 0.813 GB, free: 151.1 MB / 0.5606 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0005835/1.191, allocations: 43.53 kB / 0.813 GB, free: 151 MB / 0.5606 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.04299/1.234, allocations: 21.4 MB / 0.8339 GB, free: 136.9 MB / 0.5606 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.29e-06/1.234, allocations: 4 kB / 0.8339 GB, free: 136.9 MB / 0.5606 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.03954/1.274, allocations: 16.8 MB / 0.8503 GB, free: 121.5 MB / 0.5606 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0008877/1.274, allocations: 386.3 kB / 0.8507 GB, free: 121.1 MB / 0.5606 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0009254/1.275, allocations: 40 kB / 0.8508 GB, free: 121.1 MB / 0.5606 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.003014/1.278, allocations: 365.6 kB / 0.8511 GB, free: 120.7 MB / 0.5606 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.001938/1.28, allocations: 0.5448 MB / 0.8516 GB, free: 120.2 MB / 0.5606 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0003698/1.281, allocations: 59.98 kB / 0.8517 GB, free: 120.1 MB / 0.5606 GB Notification: Performance of sorting global known variables: time 0.00168/1.282, allocations: 1.311 MB / 0.853 GB, free: 118.8 MB / 0.5606 GB Notification: Performance of sort global known variables: time 1.8e-07/1.282, allocations: 0 / 0.853 GB, free: 118.8 MB / 0.5606 GB Notification: Performance of remove unused functions: time 0.005955/1.288, allocations: 1.876 MB / 0.8548 GB, free: 117 MB / 0.5606 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 5 * Number of states: 17 (order3_2.delta,order3_2.w,order3_2.e1q,order2.delta,order2.w,Syn2.delta,Syn2.w,Syn2.e1q,Syn2.e1d,Syn2.e2q,Syn2.e2d,Exc1.vm,Exc1.vr,Exc1.vf1,Exc2.vm,Exc2.vr,Exc2.vf1) * 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 (149): * Single equations (assignments): 148 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (linear and non-linear blocks): 0 * Torn equation systems: 1 * Mixed (continuous/discrete) equation systems: 0 Notification: Torn system details for strict tearing set: * Linear torn systems: 1 {(63,8.1%) 25} * Non-linear torn systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.0005224/1.289, allocations: 171.8 kB / 0.855 GB, free: 116.8 MB / 0.5606 GB Notification: Performance of simCode: created initialization part: time 0.02828/1.317, allocations: 12.58 MB / 0.8673 GB, free: 104.2 MB / 0.5606 GB Notification: Performance of simCode: created event and clocks part: time 8.997e-06/1.317, allocations: 0 / 0.8673 GB, free: 104.2 MB / 0.5606 GB Notification: Performance of simCode: created simulation system equations: time 0.01159/1.329, allocations: 4.599 MB / 0.8717 GB, free: 99.56 MB / 0.5606 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.003116/1.332, allocations: 221.3 kB / 0.872 GB, free: 99.34 MB / 0.5606 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.008737/1.341, allocations: 6.219 MB / 0.878 GB, free: 93.11 MB / 0.5606 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0008636/1.342, allocations: 1.744 MB / 0.8797 GB, free: 91.33 MB / 0.5606 GB Notification: Performance of simCode: alias equations: time 0.001391/1.343, allocations: 276.8 kB / 0.88 GB, free: 91.05 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0005204/1.344, allocations: 151.3 kB / 0.8801 GB, free: 90.91 MB / 0.5606 GB Notification: Performance of SimCode: time 5.91e-07/1.344, allocations: 0 / 0.8801 GB, free: 90.91 MB / 0.5606 GB Notification: Performance of Templates: time 0.08973/1.433, allocations: 73.86 MB / 0.9523 GB, free: 17.04 MB / 0.5606 GB make -j1 -f OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII.makefile (rm -f OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII.pipe ; mkfifo OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII.pipe ; head -c 1048576 < OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII.pipe >> ../files/OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII.sim & ./OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII -abortSlowSimulation -alarm=480 -lv LOG_STATS > OpenIPSL_dev_OpenIPSL.Examples.PSATSystems.ThreeArea.SixthOrder_AVRIII.pipe 2>&1)