Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow.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/BuildSysPro 3.6.0/package.mo", uses=false) Using package BuildSysPro with version 3.5.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/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(BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow") translateModel(BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001363/0.001362, allocations: 105.6 kB / 16.27 MB, free: 6.414 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001357/0.001358, allocations: 190.3 kB / 17.2 MB, free: 5.953 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.292/1.292, allocations: 222.9 MB / 240.9 MB, free: 15.21 MB / 206.1 MB [/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/Building/BuildingEnvelope/HeatTransfer/package.mo:2:1-40:17:writable] Warning: Soil_case_nappe was referenced in the package.order file, but was not found in package.mo, Soil_case_nappe/package.mo or Soil_case_nappe.mo. Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/BuildSysPro 3.6.0/package.mo): time 0.828/0.828, allocations: 143.1 MB / 434.1 MB, free: 12.11 MB / 350.1 MB Notification: Performance of FrontEnd - loaded program: time 0.001363/0.001363, allocations: 63.89 kB / 0.5148 GB, free: 15.22 MB / 446.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3337/0.3351, allocations: 82.03 MB / 0.5949 GB, free: 16.2 MB / 446.1 MB Notification: Performance of NFInst.instantiate(BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow): time 0.05573/0.3909, allocations: 61.18 MB / 0.6547 GB, free: 2.93 MB / 494.1 MB Notification: Performance of NFInst.instExpressions: time 0.01581/0.4067, allocations: 12.01 MB / 0.6664 GB, free: 6.879 MB / 0.4981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.001771/0.4085, allocations: 59.62 kB / 0.6665 GB, free: 6.82 MB / 0.4981 GB Notification: Performance of NFTyping.typeComponents: time 0.001952/0.4106, allocations: 0.6869 MB / 0.6671 GB, free: 6.129 MB / 0.4981 GB Notification: Performance of NFTyping.typeBindings: time 0.005138/0.4157, allocations: 1.958 MB / 0.669 GB, free: 4.164 MB / 0.4981 GB Notification: Performance of NFTyping.typeClassSections: time 0.002901/0.4186, allocations: 1.2 MB / 0.6702 GB, free: 2.977 MB / 0.4981 GB Notification: Performance of NFFlatten.flatten: time 0.003954/0.4226, allocations: 3.086 MB / 0.6732 GB, free: 15.88 MB / 0.5137 GB Notification: Performance of NFFlatten.resolveConnections: time 0.001858/0.4245, allocations: 1.129 MB / 0.6743 GB, free: 14.71 MB / 0.5137 GB Notification: Performance of NFEvalConstants.evaluate: time 0.002948/0.4274, allocations: 1.317 MB / 0.6756 GB, free: 13.39 MB / 0.5137 GB Notification: Performance of NFSimplifyModel.simplify: time 0.00164/0.4291, allocations: 0.9218 MB / 0.6765 GB, free: 12.47 MB / 0.5137 GB Notification: Performance of NFPackage.collectConstants: time 0.0003259/0.4294, allocations: 120 kB / 0.6766 GB, free: 12.35 MB / 0.5137 GB Notification: Performance of NFFlatten.collectFunctions: time 0.002911/0.4324, allocations: 1.439 MB / 0.678 GB, free: 10.91 MB / 0.5137 GB Notification: Performance of NFScalarize.scalarize: time 0.0004506/0.4328, allocations: 298.8 kB / 0.6783 GB, free: 10.62 MB / 0.5137 GB Notification: Performance of NFVerifyModel.verify: time 0.001134/0.434, allocations: 0.7036 MB / 0.679 GB, free: 9.91 MB / 0.5137 GB Notification: Performance of NFConvertDAE.convert: time 0.003905/0.4379, allocations: 2.399 MB / 0.6814 GB, free: 7.504 MB / 0.5137 GB Notification: Performance of FrontEnd - DAE generated: time 4.529e-06/0.4379, allocations: 0 / 0.6814 GB, free: 7.504 MB / 0.5137 GB Notification: Performance of FrontEnd: time 1.814e-06/0.4379, allocations: 0 / 0.6814 GB, free: 7.504 MB / 0.5137 GB Notification: Performance of Transformations before backend: time 5.515e-05/0.438, allocations: 0 / 0.6814 GB, free: 7.504 MB / 0.5137 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 194 * Number of variables: 194 Notification: Performance of Generate backend data structure: time 0.003609/0.4416, allocations: 1.734 MB / 0.683 GB, free: 5.711 MB / 0.5137 GB Notification: Performance of prepare preOptimizeDAE: time 4.058e-05/0.4416, allocations: 12.03 kB / 0.6831 GB, free: 5.699 MB / 0.5137 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.002622/0.4443, allocations: 454.7 kB / 0.6835 GB, free: 5.254 MB / 0.5137 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.002285/0.4466, allocations: 1.124 MB / 0.6846 GB, free: 4.074 MB / 0.5137 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.000364/0.4469, allocations: 113.9 kB / 0.6847 GB, free: 3.965 MB / 0.5137 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.0001566/0.4471, allocations: 84 kB / 0.6848 GB, free: 3.883 MB / 0.5137 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.002259/0.4494, allocations: 1.01 MB / 0.6858 GB, free: 2.84 MB / 0.5137 GB Notification: Performance of preOpt findStateOrder (simulation): time 1.974e-05/0.4494, allocations: 0 / 0.6858 GB, free: 2.84 MB / 0.5137 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 8.786e-05/0.4495, allocations: 36 kB / 0.6858 GB, free: 2.805 MB / 0.5137 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.702e-05/0.4495, allocations: 20 kB / 0.6858 GB, free: 2.785 MB / 0.5137 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00267/0.4522, allocations: 0.9485 MB / 0.6867 GB, free: 1.84 MB / 0.5137 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 0.006524/0.4587, allocations: 4.727 MB / 0.6914 GB, free: 12.76 MB / 0.5294 GB Notification: Performance of preOpt comSubExp (simulation): time 0.004088/0.4629, allocations: 1.009 MB / 0.6923 GB, free: 11.75 MB / 0.5294 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.001074/0.4639, allocations: 425.8 kB / 0.6928 GB, free: 11.33 MB / 0.5294 GB Notification: Performance of preOpt evalFunc (simulation): time 0.0009693/0.4649, allocations: 1.009 MB / 0.6937 GB, free: 10.1 MB / 0.5294 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 3.61e-05/0.465, allocations: 43 kB / 0.6938 GB, free: 10.04 MB / 0.5294 GB Notification: Performance of pre-optimization done (n=53): time 2.575e-06/0.465, allocations: 0 / 0.6938 GB, free: 10.04 MB / 0.5294 GB Notification: Performance of matching and sorting (n=53): time 0.009682/0.4747, allocations: 2.24 MB / 0.696 GB, free: 7.773 MB / 0.5294 GB Notification: Performance of inlineWhenForInitialization (initialization): time 4.159e-05/0.4747, allocations: 55.84 kB / 0.696 GB, free: 7.707 MB / 0.5294 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001433/0.4762, allocations: 0.9431 MB / 0.6969 GB, free: 6.746 MB / 0.5294 GB Notification: Performance of collectPreVariables (initialization): time 9.158e-05/0.4763, allocations: 41.69 kB / 0.697 GB, free: 6.699 MB / 0.5294 GB Notification: Performance of collectInitialEqns (initialization): time 0.0004068/0.4767, allocations: 0.4924 MB / 0.6975 GB, free: 6.203 MB / 0.5294 GB Notification: Performance of collectInitialBindings (initialization): time 0.0001837/0.4769, allocations: 189.3 kB / 0.6976 GB, free: 6.016 MB / 0.5294 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0002454/0.4771, allocations: 130.1 kB / 0.6978 GB, free: 5.883 MB / 0.5294 GB Notification: Performance of setup shared object (initialization): time 0.0001106/0.4773, allocations: 326 kB / 0.6981 GB, free: 5.559 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.001051/0.4783, allocations: 362.8 kB / 0.6984 GB, free: 5.203 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.001189/0.4795, allocations: 0.5194 MB / 0.6989 GB, free: 4.617 MB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.002094/0.4816, allocations: 0.758 MB / 0.6997 GB, free: 3.828 MB / 0.5294 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 4.418e-06/0.4816, allocations: 0 / 0.6997 GB, free: 3.828 MB / 0.5294 GB Notification: Performance of matching and sorting (n=69) (initialization): time 0.003081/0.4847, allocations: 1.076 MB / 0.7007 GB, free: 2.738 MB / 0.5294 GB Notification: Performance of prepare postOptimizeDAE: time 2.007e-05/0.4848, allocations: 8 kB / 0.7007 GB, free: 2.73 MB / 0.5294 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 8.496e-06/0.4848, allocations: 0 / 0.7007 GB, free: 2.73 MB / 0.5294 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001289/0.4861, allocations: 312.9 kB / 0.701 GB, free: 2.422 MB / 0.5294 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006399/0.4867, allocations: 135.8 kB / 0.7012 GB, free: 2.289 MB / 0.5294 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001458/0.4882, allocations: 0.9074 MB / 0.702 GB, free: 1.355 MB / 0.5294 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00105/0.4893, allocations: 127.3 kB / 0.7022 GB, free: 1.23 MB / 0.5294 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.814e-05/0.4893, allocations: 35.86 kB / 0.7022 GB, free: 1.195 MB / 0.5294 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.001339/0.4907, allocations: 0.5596 MB / 0.7027 GB, free: 0.6328 MB / 0.5294 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.001126/0.4918, allocations: 0.5117 MB / 0.7032 GB, free: 60 kB / 0.5294 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.002026/0.4939, allocations: 0.758 MB / 0.704 GB, free: 15.26 MB / 0.545 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 5.12e-06/0.4939, allocations: 0 / 0.704 GB, free: 15.26 MB / 0.545 GB Notification: Performance of matching and sorting (n=69) (initialization_lambda0): time 0.002986/0.4969, allocations: 1.064 MB / 0.705 GB, free: 14.19 MB / 0.545 GB Notification: Performance of prepare postOptimizeDAE: time 1.255e-05/0.4969, allocations: 6.344 kB / 0.705 GB, free: 14.18 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.981e-06/0.4969, allocations: 4 kB / 0.705 GB, free: 14.18 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (initialization): time 0.001099/0.498, allocations: 296.9 kB / 0.7053 GB, free: 13.89 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0006177/0.4986, allocations: 139.8 kB / 0.7055 GB, free: 13.75 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.001437/0.5001, allocations: 0.9171 MB / 0.7063 GB, free: 12.81 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001086/0.5012, allocations: 111.6 kB / 0.7065 GB, free: 12.7 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 7.227e-05/0.5013, allocations: 23.98 kB / 0.7065 GB, free: 12.68 MB / 0.545 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 11 * 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 (55): * Single equations (assignments): 54 * Array equations: 0 * Algorithm blocks: 0 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,14)} Notification: Performance of prepare postOptimizeDAE: time 0.0002305/0.5015, allocations: 224 kB / 0.7067 GB, free: 12.45 MB / 0.545 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0002612/0.5018, allocations: 114.6 kB / 0.7068 GB, free: 12.34 MB / 0.545 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.004556/0.5063, allocations: 1.322 MB / 0.7081 GB, free: 11.01 MB / 0.545 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 1.364e-05/0.5064, allocations: 4 kB / 0.7081 GB, free: 11.01 MB / 0.545 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 6.112e-06/0.5064, allocations: 0 / 0.7081 GB, free: 11.01 MB / 0.545 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 1.015e-05/0.5064, allocations: 3.984 kB / 0.7081 GB, free: 11 MB / 0.545 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.005974/0.5124, allocations: 2.412 MB / 0.7105 GB, free: 8.516 MB / 0.545 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 7.495e-06/0.5124, allocations: 0 / 0.7105 GB, free: 8.516 MB / 0.545 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.000562/0.513, allocations: 108 kB / 0.7106 GB, free: 8.41 MB / 0.545 GB Notification: Performance of postOpt tearingSystem (simulation): time 0.001019/0.514, allocations: 312.5 kB / 0.7109 GB, free: 8.102 MB / 0.545 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 5.21e-05/0.5141, allocations: 19.98 kB / 0.7109 GB, free: 8.082 MB / 0.545 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.001506/0.5156, allocations: 0.9346 MB / 0.7118 GB, free: 7.121 MB / 0.545 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.439e-06/0.5156, allocations: 4.031 kB / 0.7118 GB, free: 7.117 MB / 0.545 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.004379/0.52, allocations: 1.343 MB / 0.7131 GB, free: 5.738 MB / 0.545 GB Notification: Performance of postOpt removeConstants (simulation): time 0.0005142/0.5205, allocations: 275.5 kB / 0.7134 GB, free: 5.449 MB / 0.545 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002098/0.5207, allocations: 15.94 kB / 0.7134 GB, free: 5.434 MB / 0.545 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0009082/0.5216, allocations: 75.91 kB / 0.7135 GB, free: 5.359 MB / 0.545 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.587e-05/0.5217, allocations: 40.33 kB / 0.7135 GB, free: 5.316 MB / 0.545 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 6.241e-05/0.5218, allocations: 27.97 kB / 0.7135 GB, free: 5.289 MB / 0.545 GB Notification: Performance of sorting global known variables: time 0.0009866/0.5228, allocations: 0.6712 MB / 0.7142 GB, free: 4.609 MB / 0.545 GB Notification: Performance of sort global known variables: time 1.21e-07/0.5228, allocations: 0 / 0.7142 GB, free: 4.609 MB / 0.545 GB Notification: Performance of remove unused functions: time 0.00157/0.5244, allocations: 0.573 MB / 0.7147 GB, free: 4.035 MB / 0.545 GB Notification: Model statistics after passing the back-end for simulation: * 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 simulation (42): * Single equations (assignments): 38 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 3 * 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): 0 systems * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,16)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0009063/0.5253, allocations: 395.2 kB / 0.7151 GB, free: 3.652 MB / 0.545 GB Notification: Performance of simCode: created initialization part: time 0.004026/0.5293, allocations: 1.35 MB / 0.7164 GB, free: 2.305 MB / 0.545 GB Notification: Performance of simCode: created event and clocks part: time 4.449e-06/0.5294, allocations: 0 / 0.7164 GB, free: 2.305 MB / 0.545 GB Notification: Performance of simCode: created simulation system equations: time 0.001259/0.5306, allocations: 456.9 kB / 0.7169 GB, free: 1.859 MB / 0.545 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.002446/0.5331, allocations: 0.4998 MB / 0.7174 GB, free: 1.383 MB / 0.545 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.004169/0.5373, allocations: 1.959 MB / 0.7193 GB, free: 15.37 MB / 0.5606 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0006582/0.538, allocations: 1.058 MB / 0.7203 GB, free: 14.29 MB / 0.5606 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0003105/0.5383, allocations: 95.39 kB / 0.7204 GB, free: 14.19 MB / 0.5606 GB Notification: Performance of SimCode: time 6.52e-07/0.5383, allocations: 0 / 0.7204 GB, free: 14.19 MB / 0.5606 GB Notification: Performance of Templates: time 0.03212/0.5704, allocations: 24.27 MB / 0.7441 GB, free: 6.145 MB / 0.5762 GB make -j1 -f BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow.makefile (rm -f BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow.pipe ; mkfifo BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow.pipe ; head -c 1048576 < BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow.pipe >> ../files/BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow.sim & ./BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow -abortSlowSimulation -alarm=480 -lv LOG_STATS > BuildSysPro_BuildSysPro.IBPSA.Fluid.HeatPumps.Validation.Carnot_TCon_reverseFlow.pipe 2>&1)