Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat.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/Buildings 12.0.0-master/package.mo", uses=false) Using package Buildings with version 12.0.0 (/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/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(Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat") translateModel(Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat") Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001171/0.001171, allocations: 108 kB / 15.61 MB, free: 152 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001233/0.001233, allocations: 195.3 kB / 16.53 MB, free: 6.664 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.587/1.587, allocations: 222.9 MB / 240.2 MB, free: 4.395 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Buildings 12.0.0-master/package.mo): time 3.001/3.001, allocations: 472.6 MB / 0.7451 GB, free: 4.695 MB / 0.5919 GB Notification: Performance of FrontEnd - loaded program: time 0.001573/0.001573, allocations: 61.97 kB / 0.912 GB, free: 33.38 MB / 0.7169 GB Notification: Performance of FrontEnd - Absyn->SCode: time 0.3699/0.3715, allocations: 159.9 MB / 1.068 GB, free: 10.49 MB / 0.8262 GB Notification: Performance of NFInst.instantiate(Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat): time 1.048/1.42, allocations: 217.4 MB / 1.28 GB, free: 16.16 MB / 0.9981 GB Notification: Performance of NFInst.instExpressions: time 0.06203/1.482, allocations: 39.56 MB / 1.319 GB, free: 15.52 MB / 0.9981 GB Notification: Performance of NFInst.updateImplicitVariability: time 0.01162/1.494, allocations: 221.3 kB / 1.319 GB, free: 15.51 MB / 0.9981 GB Notification: Performance of NFTyping.typeComponents: time 0.009392/1.503, allocations: 2.628 MB / 1.322 GB, free: 15.47 MB / 0.9981 GB Notification: Performance of NFTyping.typeBindings: time 0.02386/1.527, allocations: 6.342 MB / 1.328 GB, free: 15.22 MB / 0.9981 GB Notification: Performance of NFTyping.typeClassSections: time 0.01575/1.543, allocations: 5.098 MB / 1.333 GB, free: 15.09 MB / 0.9981 GB Notification: Performance of NFFlatten.flatten: time 0.02253/1.565, allocations: 13.18 MB / 1.346 GB, free: 9.328 MB / 0.9981 GB Notification: Performance of NFFlatten.resolveConnections: time 0.01201/1.577, allocations: 5.055 MB / 1.351 GB, free: 6.863 MB / 0.9981 GB Notification: Performance of NFEvalConstants.evaluate: time 0.01846/1.596, allocations: 6.015 MB / 1.357 GB, free: 4.117 MB / 0.9981 GB Notification: Performance of NFSimplifyModel.simplify: time 0.009119/1.605, allocations: 3.645 MB / 1.36 GB, free: 2.637 MB / 0.9981 GB Notification: Performance of NFPackage.collectConstants: time 0.002856/1.608, allocations: 0.5364 MB / 1.361 GB, free: 2.633 MB / 0.9981 GB Notification: Performance of NFFlatten.collectFunctions: time 0.01237/1.62, allocations: 2.998 MB / 1.364 GB, free: 1.695 MB / 0.9981 GB Notification: Performance of NFScalarize.scalarize: time 0.002975/1.623, allocations: 1.194 MB / 1.365 GB, free: 0.8867 MB / 0.9981 GB Notification: Performance of NFVerifyModel.verify: time 0.009858/1.633, allocations: 2.966 MB / 1.368 GB, free: 15.38 MB / 1.014 GB Notification: Performance of NFConvertDAE.convert: time 0.02255/1.656, allocations: 8.638 MB / 1.376 GB, free: 10.07 MB / 1.014 GB Notification: Performance of FrontEnd - DAE generated: time 7.895e-06/1.656, allocations: 0 / 1.376 GB, free: 10.07 MB / 1.014 GB Notification: Performance of FrontEnd: time 1.864e-06/1.656, allocations: 0 / 1.376 GB, free: 10.07 MB / 1.014 GB Notification: Performance of Transformations before backend: time 0.000405/1.656, allocations: 0 / 1.376 GB, free: 10.07 MB / 1.014 GB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 826 * Number of variables: 826 Notification: Performance of Generate backend data structure: time 0.0174/1.674, allocations: 5.488 MB / 1.382 GB, free: 6.18 MB / 1.014 GB Notification: Performance of prepare preOptimizeDAE: time 5.04e-05/1.674, allocations: 7.562 kB / 1.382 GB, free: 6.18 MB / 1.014 GB Notification: Performance of preOpt normalInlineFunction (simulation): time 0.006784/1.681, allocations: 1.124 MB / 1.383 GB, free: 5.652 MB / 1.014 GB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0114/1.692, allocations: 4.173 MB / 1.387 GB, free: 2.531 MB / 1.014 GB Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.001562/1.694, allocations: 467.7 kB / 1.387 GB, free: 2.336 MB / 1.014 GB Notification: Performance of preOpt expandDerOperator (simulation): time 0.00128/1.695, allocations: 343.2 kB / 1.388 GB, free: 2.215 MB / 1.014 GB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0131/1.708, allocations: 3.916 MB / 1.391 GB, free: 15.72 MB / 1.029 GB Notification: Performance of preOpt findStateOrder (simulation): time 0.0001086/1.708, allocations: 21.39 kB / 1.391 GB, free: 15.71 MB / 1.029 GB Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.00056/1.709, allocations: 139.6 kB / 1.392 GB, free: 15.61 MB / 1.029 GB Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.695e-05/1.709, allocations: 83.22 kB / 1.392 GB, free: 15.61 MB / 1.029 GB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.009807/1.719, allocations: 3.306 MB / 1.395 GB, free: 13.94 MB / 1.029 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 0.03561/1.754, allocations: 21.4 MB / 1.416 GB, free: 8.5 MB / 1.045 GB Notification: Performance of preOpt comSubExp (simulation): time 0.006668/1.761, allocations: 1.967 MB / 1.418 GB, free: 6.535 MB / 1.045 GB Notification: Performance of preOpt resolveLoops (simulation): time 0.002448/1.764, allocations: 0.9806 MB / 1.419 GB, free: 5.559 MB / 1.045 GB Notification: Performance of preOpt evalFunc (simulation): time 0.002945/1.767, allocations: 3.184 MB / 1.422 GB, free: 1.684 MB / 1.045 GB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.00315/1.77, allocations: 1.162 MB / 1.423 GB, free: 0.4961 MB / 1.045 GB Notification: Performance of pre-optimization done (n=158): time 5.059e-06/1.77, allocations: 0 / 1.423 GB, free: 0.4961 MB / 1.045 GB Notification: Performance of matching and sorting (n=158): time 0.008978/1.779, allocations: 2.973 MB / 1.426 GB, free: 13.52 MB / 1.061 GB Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001539/1.779, allocations: 201.2 kB / 1.426 GB, free: 13.28 MB / 1.061 GB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.008517/1.788, allocations: 3.985 MB / 1.43 GB, free: 9.293 MB / 1.061 GB Notification: Performance of collectPreVariables (initialization): time 0.000621/1.788, allocations: 65.64 kB / 1.43 GB, free: 9.223 MB / 1.061 GB Notification: Performance of collectInitialEqns (initialization): time 0.002192/1.79, allocations: 2.077 MB / 1.432 GB, free: 7.133 MB / 1.061 GB Notification: Performance of collectInitialBindings (initialization): time 0.001031/1.791, allocations: 0.556 MB / 1.432 GB, free: 6.582 MB / 1.061 GB Notification: Performance of simplifyInitialFunctions (initialization): time 0.0008591/1.792, allocations: 455.4 kB / 1.433 GB, free: 6.129 MB / 1.061 GB Notification: Performance of setup shared object (initialization): time 0.0001023/1.792, allocations: 313.1 kB / 1.433 GB, free: 5.82 MB / 1.061 GB Notification: Performance of preBalanceInitialSystem (initialization): time 0.002644/1.795, allocations: 0.9621 MB / 1.434 GB, free: 4.848 MB / 1.061 GB Notification: Performance of partitionIndependentBlocks (initialization): time 0.003482/1.799, allocations: 1.774 MB / 1.436 GB, free: 2.707 MB / 1.061 GB Notification: Performance of analyzeInitialSystem (initialization): time 0.00587/1.804, allocations: 2.615 MB / 1.438 GB, free: 15.79 MB / 1.076 GB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.014e-05/1.804, allocations: 4 kB / 1.438 GB, free: 15.79 MB / 1.076 GB Notification: Performance of matching and sorting (n=274) (initialization): time 0.009226/1.814, allocations: 3.093 MB / 1.441 GB, free: 12.68 MB / 1.076 GB Notification: Performance of prepare postOptimizeDAE: time 3.995e-05/1.814, allocations: 15.94 kB / 1.441 GB, free: 12.66 MB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.477e-05/1.814, allocations: 27.94 kB / 1.442 GB, free: 12.64 MB / 1.076 GB Notification: Performance of postOpt tearingSystem (initialization): time 5.14e-05/1.814, allocations: 36.03 kB / 1.442 GB, free: 12.6 MB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002619/1.817, allocations: 0.6006 MB / 1.442 GB, free: 12 MB / 1.076 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 5.558e-05/1.817, allocations: 47.86 kB / 1.442 GB, free: 11.95 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00463/1.821, allocations: 472.6 kB / 1.443 GB, free: 11.49 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0005712/1.822, allocations: 123.9 kB / 1.443 GB, free: 11.37 MB / 1.076 GB Notification: Performance of preBalanceInitialSystem (initialization_lambda0): time 0.004902/1.827, allocations: 1.644 MB / 1.444 GB, free: 9.715 MB / 1.076 GB Notification: Performance of partitionIndependentBlocks (initialization_lambda0): time 0.003788/1.831, allocations: 1.755 MB / 1.446 GB, free: 7.602 MB / 1.076 GB Notification: Performance of analyzeInitialSystem (initialization_lambda0): time 0.006179/1.837, allocations: 2.565 MB / 1.449 GB, free: 4.73 MB / 1.076 GB Notification: Performance of solveInitialSystemEqSystem (initialization_lambda0): time 2.812e-05/1.837, allocations: 4 kB / 1.449 GB, free: 4.727 MB / 1.076 GB Notification: Performance of matching and sorting (n=274) (initialization_lambda0): time 0.009897/1.847, allocations: 3.038 MB / 1.452 GB, free: 1.676 MB / 1.076 GB Notification: Performance of prepare postOptimizeDAE: time 3.425e-05/1.847, allocations: 16.97 kB / 1.452 GB, free: 1.66 MB / 1.076 GB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.356e-05/1.847, allocations: 23.98 kB / 1.452 GB, free: 1.637 MB / 1.076 GB Notification: Performance of postOpt tearingSystem (initialization): time 4.326e-05/1.847, allocations: 39.94 kB / 1.452 GB, free: 1.598 MB / 1.076 GB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.002607/1.85, allocations: 0.5967 MB / 1.452 GB, free: 1 MB / 1.076 GB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 6.361e-05/1.85, allocations: 47.84 kB / 1.452 GB, free: 0.9531 MB / 1.076 GB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.004907/1.855, allocations: 374.2 kB / 1.453 GB, free: 0.5859 MB / 1.076 GB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0006432/1.855, allocations: 116 kB / 1.453 GB, free: 484 kB / 1.076 GB Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 99 * Number of states: 0 () * Number of discrete variables: 8 ($whenCondition2,$PRE.sch.nextTimeEvent,$whenCondition1,theMixValNoEle.conPID.con1.y,theMixVal.conPID.con1.y,sch.nextTimeEventScaled,$PRE.sch.nextTimeEventScaled,sch.nextTimeEvent) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (274): * Single equations (assignments): 274 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 0 * When equations: 0 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of prepare postOptimizeDAE: time 0.001053/1.856, allocations: 338.8 kB / 1.453 GB, free: 140 kB / 1.076 GB Notification: Performance of postOpt lateInlineFunction (simulation): time 0.00213/1.858, allocations: 431.9 kB / 1.453 GB, free: 15.71 MB / 1.092 GB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.009959/1.868, allocations: 3.453 MB / 1.457 GB, free: 12.31 MB / 1.092 GB Notification: Performance of postOpt inlineArrayEqn (simulation): time 6.815e-05/1.869, allocations: 27.98 kB / 1.457 GB, free: 12.29 MB / 1.092 GB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.539e-05/1.869, allocations: 96 / 1.457 GB, free: 12.29 MB / 1.092 GB Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.005729/1.874, allocations: 2.358 MB / 1.459 GB, free: 9.844 MB / 1.092 GB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.01954/1.894, allocations: 6.629 MB / 1.466 GB, free: 3.164 MB / 1.092 GB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.832e-05/1.894, allocations: 4 kB / 1.466 GB, free: 3.16 MB / 1.092 GB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.002171/1.896, allocations: 399.7 kB / 1.466 GB, free: 2.77 MB / 1.092 GB Notification: Performance of postOpt tearingSystem (simulation): time 3.785e-05/1.896, allocations: 12 kB / 1.466 GB, free: 2.758 MB / 1.092 GB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0002867/1.896, allocations: 55.97 kB / 1.466 GB, free: 2.703 MB / 1.092 GB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 2.316e-05/1.897, allocations: 8 kB / 1.466 GB, free: 2.695 MB / 1.092 GB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 4.829e-06/1.897, allocations: 4 kB / 1.466 GB, free: 2.691 MB / 1.092 GB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.01142/1.908, allocations: 4.231 MB / 1.47 GB, free: 14.42 MB / 1.107 GB Notification: Performance of postOpt removeConstants (simulation): time 0.003847/1.912, allocations: 0.8582 MB / 1.471 GB, free: 13.54 MB / 1.107 GB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.002676/1.915, allocations: 43.84 kB / 1.471 GB, free: 13.49 MB / 1.107 GB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.00568/1.92, allocations: 221.8 kB / 1.471 GB, free: 13.28 MB / 1.107 GB Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0006133/1.921, allocations: 121.7 kB / 1.471 GB, free: 13.16 MB / 1.107 GB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0006935/1.922, allocations: 87.94 kB / 1.472 GB, free: 13.07 MB / 1.107 GB Notification: Performance of sorting global known variables: time 0.01047/1.932, allocations: 2.756 MB / 1.474 GB, free: 10.33 MB / 1.107 GB Notification: Performance of sort global known variables: time 8.41e-07/1.932, allocations: 0 / 1.474 GB, free: 10.33 MB / 1.107 GB Notification: Performance of remove unused functions: time 0.01339/1.946, allocations: 2.089 MB / 1.476 GB, free: 8.234 MB / 1.107 GB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 11 * Number of states: 12 (theMixVal.conPID.I.y,theMixVal.jun.vol.dynBal.U,theMixVal.eneMetReq.EInt,theMixVal.eneMetAct.EInt,gen.senTemHot.T,gen.senTemHexOut.T,genNoEle.senTemHot.T,genNoEle.senTemHexOut.T,theMixValNoEle.conPID.I.y,theMixValNoEle.jun.vol.dynBal.U,theMixValNoEle.eneMetReq.EInt,theMixValNoEle.eneMetAct.EInt) * Number of discrete variables: 4 ($whenCondition2,$whenCondition1,sch.nextTimeEvent,sch.nextTimeEventScaled) * Number of discrete states: 2 (sch.nextTimeEvent,sch.nextTimeEventScaled) * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for simulation (191): * Single equations (assignments): 169 * Array equations: 0 * Algorithm blocks: 0 * Record equations: 20 * When equations: 2 * If-equations: 0 * Equation systems (not torn): 0 * Torn equation systems: 0 * Mixed (continuous/discrete) equation systems: 0 Notification: Performance of Backend phase and start with SimCode phase: time 0.004286/1.95, allocations: 1.37 MB / 1.478 GB, free: 7.141 MB / 1.107 GB Notification: Performance of simCode: created initialization part: time 0.01456/1.965, allocations: 4.06 MB / 1.482 GB, free: 3.094 MB / 1.107 GB Notification: Performance of simCode: created event and clocks part: time 1.375e-05/1.965, allocations: 448 / 1.482 GB, free: 3.094 MB / 1.107 GB Notification: Performance of simCode: created simulation system equations: time 0.003618/1.968, allocations: 1.175 MB / 1.483 GB, free: 1.914 MB / 1.107 GB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.01436/1.983, allocations: 2.095 MB / 1.485 GB, free: 15.89 MB / 1.123 GB Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02301/2.006, allocations: 7.666 MB / 1.492 GB, free: 8.203 MB / 1.123 GB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.004502/2.01, allocations: 2.289 MB / 1.494 GB, free: 5.879 MB / 1.123 GB Notification: Performance of simCode: alias equations: time 0.006483/2.017, allocations: 1.037 MB / 1.495 GB, free: 4.934 MB / 1.123 GB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.001269/2.018, allocations: 355.2 kB / 1.496 GB, free: 4.586 MB / 1.123 GB Notification: Performance of SimCode: time 1.192e-06/2.018, allocations: 0 / 1.496 GB, free: 4.586 MB / 1.123 GB Notification: Performance of Templates: time 0.1668/2.185, allocations: 84.7 MB / 1.579 GB, free: 0.9258 MB / 1.201 GB make -j1 -f Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat.makefile (rm -f Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat.pipe ; mkfifo Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat.pipe ; head -c 1048576 < Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat.pipe >> ../files/Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat.sim & ./Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat -abortSlowSimulation -alarm=480 -lv LOG_STATS > Buildings_3.0.0_Buildings.DHC.Loads.HotWater.Examples.HeaterAndFixtureDirectHeatExchangerWithElectricHeat.pipe 2>&1)