Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr AES_AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop.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/AES main/package.mo", uses=false) Using package AES with version (/home/hudson/saved_omc/libraries/.openmodelica/libraries/AES main/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: "" <> buildModelFMU(AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop,fileNamePrefix="AES_AES_Coursework_ElecSys_power_frequency_control_PA_two_generators_loadDroop",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop,fileNamePrefix="AES_AES_Coursework_ElecSys_power_frequency_control_PA_two_generators_loadDroop",fmuType="me",version="2.0",platforms={"static"}) Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/ModelicaServices 4.0.0+maint.om/package.mo): time 0.001145/0.001145, allocations: 108 kB / 15.6 MB, free: 132 kB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.00122/0.00122, allocations: 194.7 kB / 16.53 MB, free: 6.391 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.355/1.355, allocations: 222.9 MB / 240.2 MB, free: 4.406 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/AES main/package.mo): time 0.2013/0.2013, allocations: 22.35 MB / 312.7 MB, free: 12.53 MB / 254.1 MB Notification: Performance of FrontEnd - loaded program: time 0.00137/0.00137, allocations: 63.89 kB / 380.9 MB, free: 10.49 MB / 318.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.2554/0.2568, allocations: 54.93 MB / 435.9 MB, free: 39.69 MB / 350.1 MB Notification: Performance of NFInst.instantiate(AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop): time 0.00366/0.2605, allocations: 2.599 MB / 438.5 MB, free: 37.84 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.001485/0.262, allocations: 0.7961 MB / 439.3 MB, free: 37.29 MB / 350.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0003264/0.2623, allocations: 5.562 kB / 439.3 MB, free: 37.29 MB / 350.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0004913/0.2629, allocations: 97.75 kB / 439.4 MB, free: 37.23 MB / 350.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0004691/0.2634, allocations: 145.1 kB / 439.5 MB, free: 37.15 MB / 350.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0004719/0.2639, allocations: 204 kB / 439.7 MB, free: 37.05 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.0006779/0.2645, allocations: 0.542 MB / 440.3 MB, free: 36.81 MB / 350.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0003045/0.2649, allocations: 132.3 kB / 440.4 MB, free: 36.75 MB / 350.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0004576/0.2653, allocations: 233.6 kB / 440.6 MB, free: 36.65 MB / 350.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0004428/0.2658, allocations: 253.8 kB / 440.9 MB, free: 36.53 MB / 350.1 MB Notification: Performance of NFPackage.collectConstants: time 0.0001332/0.2659, allocations: 37.41 kB / 440.9 MB, free: 36.53 MB / 350.1 MB Notification: Performance of NFFlatten.collectFunctions: time 9.708e-05/0.266, allocations: 35.28 kB / 440.9 MB, free: 36.53 MB / 350.1 MB Notification: Performance of NFScalarize.scalarize: time 0.0001427/0.2662, allocations: 122.8 kB / 441 MB, free: 36.46 MB / 350.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0001747/0.2664, allocations: 194.9 kB / 441.2 MB, free: 36.33 MB / 350.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0003505/0.2667, allocations: 418.5 kB / 441.6 MB, free: 36.15 MB / 350.1 MB Notification: Performance of FrontEnd - DAE generated: time 4.158e-06/0.2667, allocations: 0 / 441.6 MB, free: 36.15 MB / 350.1 MB Notification: Performance of FrontEnd: time 1.333e-06/0.2667, allocations: 0 / 441.6 MB, free: 36.15 MB / 350.1 MB Notification: Performance of Transformations before backend: time 8.086e-06/0.2668, allocations: 0 / 441.6 MB, free: 36.15 MB / 350.1 MB Notification: Model statistics after passing the front-end and creating the data structures used by the back-end: * Number of equations: 74 * Number of variables: 74 Notification: Performance of Generate backend data structure: time 0.001611/0.2684, allocations: 0.8459 MB / 442.5 MB, free: 35.57 MB / 350.1 MB Notification: Performance of prepare preOptimizeDAE: time 3.756e-05/0.2684, allocations: 11.97 kB / 442.5 MB, free: 35.57 MB / 350.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 5.375e-05/0.2685, allocations: 65.73 kB / 442.6 MB, free: 35.51 MB / 350.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 7.498e-05/0.2686, allocations: 49.88 kB / 442.6 MB, free: 35.48 MB / 350.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.000717/0.2693, allocations: 434.2 kB / 443 MB, free: 35.18 MB / 350.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 2.609e-05/0.2693, allocations: 28.84 kB / 443.1 MB, free: 35.16 MB / 350.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 5.23e-05/0.2694, allocations: 32.81 kB / 443.1 MB, free: 35.15 MB / 350.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.0004274/0.2698, allocations: 318.3 kB / 443.4 MB, free: 35 MB / 350.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.173e-05/0.2698, allocations: 0 / 443.4 MB, free: 35 MB / 350.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.576e-05/0.2699, allocations: 10.81 kB / 443.4 MB, free: 35 MB / 350.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 1.21e-05/0.2699, allocations: 6.438 kB / 443.4 MB, free: 35 MB / 350.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0003615/0.2702, allocations: 230 kB / 443.7 MB, free: 34.93 MB / 350.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001233/0.2715, allocations: 1.076 MB / 444.7 MB, free: 34.23 MB / 350.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0006839/0.2722, allocations: 428.6 kB / 445.1 MB, free: 34.07 MB / 350.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.0002062/0.2724, allocations: 162.6 kB / 445.3 MB, free: 34 MB / 350.1 MB Notification: Performance of preOpt evalFunc (simulation): time 3.08e-05/0.2724, allocations: 11.05 kB / 445.3 MB, free: 34 MB / 350.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.429e-05/0.2725, allocations: 33.86 kB / 445.4 MB, free: 33.96 MB / 350.1 MB Notification: Performance of pre-optimization done (n=40): time 1.533e-06/0.2725, allocations: 0 / 445.4 MB, free: 33.96 MB / 350.1 MB Notification: Performance of matching and sorting (n=42): time 0.002648/0.2751, allocations: 1.194 MB / 446.5 MB, free: 33.33 MB / 350.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 2.101e-05/0.2752, allocations: 54.16 kB / 446.6 MB, free: 33.27 MB / 350.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0006462/0.2758, allocations: 436 kB / 447 MB, free: 33.08 MB / 350.1 MB Notification: Performance of collectPreVariables (initialization): time 2.101e-05/0.2758, allocations: 31.64 kB / 447.1 MB, free: 33.05 MB / 350.1 MB Notification: Performance of collectInitialEqns (initialization): time 8.205e-05/0.2759, allocations: 205.9 kB / 447.3 MB, free: 32.88 MB / 350.1 MB Notification: Performance of collectInitialBindings (initialization): time 6.83e-05/0.276, allocations: 153.8 kB / 447.4 MB, free: 32.75 MB / 350.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 8.656e-05/0.2761, allocations: 77.52 kB / 447.5 MB, free: 32.7 MB / 350.1 MB Notification: Performance of setup shared object (initialization): time 5.499e-05/0.2762, allocations: 358.4 kB / 447.8 MB, free: 32.37 MB / 350.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001723/0.2763, allocations: 119.3 kB / 447.9 MB, free: 32.33 MB / 350.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001886/0.2765, allocations: 176 kB / 448.1 MB, free: 32.23 MB / 350.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.003992/0.2805, allocations: 0.9134 MB / 449 MB, free: 31.97 MB / 350.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 2.455e-06/0.2805, allocations: 2.625 kB / 449 MB, free: 31.97 MB / 350.1 MB Warning: The linear system: 1 : Ge2.Pm = Ge2.Pcmd 2 : Ge2.Pm = Ge2.Pcmd [ -1.0 , 1.0 ; -1.0 , 1.0 ] * [ Ge2.Pcmd ; Ge2.Pm ] = [ 0.0 ; 0.0 ] might be structurally or numerically singular for variable Ge2.Pm since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway. Warning: The linear system: 1 : Ge1.Pm = Ge1.Pcmd 2 : Ge1.Pm = Ge1.Pcmd [ 1.0 , -1.0 ; 1.0 , -1.0 ] * [ Ge1.Pm ; Ge1.Pcmd ] = [ 0.0 ; 0.0 ] might be structurally or numerically singular for variable Ge1.Pcmd since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of matching and sorting (n=54) (initialization): time 0.002043/0.2826, allocations: 0.9466 MB / 450 MB, free: 31.34 MB / 350.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.553e-05/0.2826, allocations: 14.28 kB / 450 MB, free: 31.33 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.481e-06/0.2826, allocations: 0 / 450 MB, free: 31.33 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.001605/0.2842, allocations: 263 kB / 450.3 MB, free: 31.27 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003257/0.2846, allocations: 83.47 kB / 450.3 MB, free: 31.26 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006391/0.291, allocations: 8.605 MB / 458.9 MB, free: 23.09 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00042/0.2914, allocations: 42.88 kB / 459 MB, free: 23.07 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 2.263e-05/0.2914, allocations: 13.5 kB / 459 MB, free: 23.07 MB / 350.1 MB Warning: Assuming fixed start value for the following 1 variables: Ge2.deltag:VARIABLE(unit = "rad" fixed = true ) "generator angle wrt port" type: Real Notification: Model statistics after passing the back-end for initialization: * Number of independent subsystems: 5 * Number of states: 0 () * Number of discrete variables: 1 (Cs.local_reset) * Number of discrete states: 0 () * Number of clocked states: 0 () * Top-level inputs: 0 Notification: Strong component statistics for initialization (42): * Single equations (assignments): 39 * Array equations: 0 * Algorithm blocks: 0 * 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): 2 systems {(1,1,100.0%), (1,1,100.0%)} * Non-linear torn systems (#iteration vars, #inner vars): 1 system {(1,10)} Notification: Performance of prepare postOptimizeDAE: time 0.0001656/0.2916, allocations: 165.2 kB / 459.2 MB, free: 22.93 MB / 350.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 6.418e-05/0.2917, allocations: 40.88 kB / 459.2 MB, free: 22.91 MB / 350.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.001381/0.2931, allocations: 0.5524 MB / 459.7 MB, free: 22.68 MB / 350.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 4.468e-06/0.2931, allocations: 3.312 kB / 459.8 MB, free: 22.68 MB / 350.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.693e-06/0.2931, allocations: 0 / 459.8 MB, free: 22.68 MB / 350.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 6.321e-06/0.2931, allocations: 3.094 kB / 459.8 MB, free: 22.68 MB / 350.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.001805/0.2949, allocations: 1.036 MB / 460.8 MB, free: 22.12 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 3.897e-06/0.2949, allocations: 4.062 kB / 460.8 MB, free: 22.12 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0003154/0.2953, allocations: 57.77 kB / 460.9 MB, free: 22.12 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.001041/0.2963, allocations: 194 kB / 461 MB, free: 22.07 MB / 350.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.854e-05/0.2964, allocations: 7.781 kB / 461 MB, free: 22.07 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.004027/0.3004, allocations: 2.419 MB / 463.5 MB, free: 20.22 MB / 350.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.262e-06/0.3004, allocations: 3.938 kB / 463.5 MB, free: 20.22 MB / 350.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.001591/0.302, allocations: 0.763 MB / 464.2 MB, free: 19.86 MB / 350.1 MB Notification: Performance of postOpt removeConstants (simulation): time 0.0001209/0.3021, allocations: 117.1 kB / 464.3 MB, free: 19.74 MB / 350.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 5.326e-05/0.3022, allocations: 15.08 kB / 464.4 MB, free: 19.73 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000401/0.3026, allocations: 35.83 kB / 464.4 MB, free: 19.73 MB / 350.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 9.113e-05/0.3027, allocations: 30.38 kB / 464.4 MB, free: 19.72 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 2.237e-05/0.3027, allocations: 11.84 kB / 464.4 MB, free: 19.72 MB / 350.1 MB Notification: Performance of sorting global known variables: time 0.0005974/0.3033, allocations: 326.7 kB / 464.8 MB, free: 19.58 MB / 350.1 MB Notification: Performance of sort global known variables: time 2.41e-07/0.3034, allocations: 5.281 kB / 464.8 MB, free: 19.58 MB / 350.1 MB Notification: Performance of remove unused functions: time 0.0005616/0.3039, allocations: 95.69 kB / 464.9 MB, free: 19.56 MB / 350.1 MB Notification: Model statistics after passing the back-end for simulation: * Number of independent subsystems: 1 * Number of states: 8 (G1.x_scaled[1],G2.x_scaled[1],Cs.y,Ge1.deltag,Ge1.wg,Ge2.thetap,Ge2.deltag,Ge2.wg) * 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 (32): * Single equations (assignments): 31 * 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 {(1,11)} Notification: Performance of Backend phase and start with SimCode phase: time 0.001795/0.3057, allocations: 1.325 MB / 466.2 MB, free: 18.66 MB / 350.1 MB Notification: Performance of simCode: created initialization part: time 0.001003/0.3067, allocations: 0.6908 MB / 466.9 MB, free: 18.2 MB / 350.1 MB Notification: Performance of simCode: created event and clocks part: time 3.366e-06/0.3068, allocations: 1.094 kB / 466.9 MB, free: 18.2 MB / 350.1 MB Notification: Performance of simCode: created simulation system equations: time 0.000445/0.3072, allocations: 324.1 kB / 467.2 MB, free: 18 MB / 350.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0004693/0.3077, allocations: 57.28 kB / 467.2 MB, free: 17.98 MB / 350.1 MB Warning: The linear system: 1 : Ge2.Pm = Ge2.Pcmd 2 : Ge2.Pm = Ge2.Pcmd [ -1.0 , 1.0 ; -1.0 , 1.0 ] * [ Ge2.Pcmd ; Ge2.Pm ] = [ 0.0 ; 0.0 ] might be structurally or numerically singular for variable Ge2.Pm since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway. Warning: The linear system: 1 : Ge1.Pm = Ge1.Pcmd 2 : Ge1.Pm = Ge1.Pcmd [ -1.0 , 1.0 ; -1.0 , 1.0 ] * [ Ge1.Pcmd ; Ge1.Pm ] = [ 0.0 ; 0.0 ] might be structurally or numerically singular for variable Ge1.Pm since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway. Warning: The linear system: 1 : Ge2.Pm = Ge2.Pcmd 2 : Ge2.Pm = Ge2.Pcmd [ 1.0 , -1.0 ; 1.0 , -1.0 ] * [ Ge2.Pm ; Ge2.Pcmd ] = [ 0.0 ; 0.0 ] might be structurally or numerically singular for variable Ge2.Pcmd since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway. Warning: The linear system: 1 : Ge1.Pm = Ge1.Pcmd 2 : Ge1.Pm = Ge1.Pcmd [ 1.0 , -1.0 ; 1.0 , -1.0 ] * [ Ge1.Pm ; Ge1.Pcmd ] = [ 0.0 ; 0.0 ] might be structurally or numerically singular for variable Ge1.Pcmd since U(2,2) = 0.0. It might be hard to solve. Compilation continues anyway. Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.009445/0.3171, allocations: 5.166 MB / 472.4 MB, free: 14.62 MB / 350.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0004147/0.3176, allocations: 0.8416 MB / 473.3 MB, free: 13.91 MB / 350.1 MB Notification: Performance of simCode: alias equations: time 0.0002026/0.3178, allocations: 45.08 kB / 473.3 MB, free: 13.91 MB / 350.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.0001934/0.318, allocations: 137.8 kB / 473.4 MB, free: 13.8 MB / 350.1 MB Notification: Performance of SimCode: time 9.41e-07/0.318, allocations: 0 / 473.4 MB, free: 13.8 MB / 350.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.03445/0.3524, allocations: 8.97 MB / 482.4 MB, free: 12.15 MB / 350.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 11.27/11.62, allocations: 12.58 kB / 482.4 MB, free: 12.14 MB / 350.1 MB (rm -f AES_AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop.pipe ; mkfifo AES_AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop.pipe ; head -c 1048576 < AES_AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop.pipe >> ../files/AES_AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop.sim & python3 -m fmpy simulate --output-file AES_AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop_res.csv --start-time 0 --stop-time 1000 --timeout 50 --relative-tolerance 1e-06 --interface-type ModelExchange --solver CVode --output-interval 0.2 AES_AES_Coursework_ElecSys_power_frequency_control_PA_two_generators_loadDroop.fmu > AES_AES.Coursework.ElecSys_power_frequency_control.PA_two_generators_loadDroop.pipe 2>&1)