Running: ./testmodel.py --libraries=/home/hudson/saved_omc/libraries/.openmodelica/libraries --ompython_omhome=/usr AES_AES.Coursework.ElecSys_case_studies.Primary_secondary_tertiary.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_case_studies.Primary_secondary_tertiary,fileNamePrefix="AES_AES_Coursework_ElecSys_case_studies_Primary_secondary_tertiary",fmuType="me",version="2.0",platforms={"static"}) "" <> buildModelFMU(AES.Coursework.ElecSys_case_studies.Primary_secondary_tertiary,fileNamePrefix="AES_AES_Coursework_ElecSys_case_studies_Primary_secondary_tertiary",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 0.001174/0.001174, allocations: 111.3 kB / 15.23 MB, free: 0.6406 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Complex 4.0.0+maint.om/package.mo): time 0.001174/0.001174, allocations: 191 kB / 16.14 MB, free: 6.711 MB / 14.72 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/Modelica 4.0.0+maint.om/package.mo): time 1.177/1.177, allocations: 222.9 MB / 239.8 MB, free: 4.617 MB / 190.1 MB Notification: Performance of loadFile(/home/hudson/saved_omc/libraries/.openmodelica/libraries/AES main/package.mo): time 0.1654/0.1654, allocations: 22.38 MB / 312.3 MB, free: 12.75 MB / 254.1 MB Notification: Performance of FrontEnd - loaded program: time 0.00119/0.00119, allocations: 56.12 kB / 380.2 MB, free: 11.04 MB / 318.1 MB Notification: Performance of FrontEnd - Absyn->SCode: time 0.1979/0.1991, allocations: 54.95 MB / 435.2 MB, free: 39.46 MB / 350.1 MB Notification: Performance of NFInst.instantiate(AES.Coursework.ElecSys_case_studies.Primary_secondary_tertiary): time 0.002504/0.2016, allocations: 2.566 MB / 437.7 MB, free: 37.64 MB / 350.1 MB Notification: Performance of NFInst.instExpressions: time 0.0008284/0.2024, allocations: 0.7693 MB / 438.5 MB, free: 37.11 MB / 350.1 MB Notification: Performance of NFInst.updateImplicitVariability: time 0.0001214/0.2026, allocations: 5.844 kB / 438.5 MB, free: 37.11 MB / 350.1 MB Notification: Performance of NFTyping.typeComponents: time 0.0002991/0.2029, allocations: 70.75 kB / 438.6 MB, free: 37.08 MB / 350.1 MB Notification: Performance of NFTyping.typeBindings: time 0.0002198/0.2031, allocations: 123.3 kB / 438.7 MB, free: 37.01 MB / 350.1 MB Notification: Performance of NFTyping.typeClassSections: time 0.0002321/0.2034, allocations: 180 kB / 438.9 MB, free: 36.91 MB / 350.1 MB Notification: Performance of NFFlatten.flatten: time 0.0003037/0.2037, allocations: 0.4984 MB / 439.4 MB, free: 36.7 MB / 350.1 MB Notification: Performance of NFFlatten.resolveConnections: time 0.0001505/0.2038, allocations: 119.9 kB / 439.5 MB, free: 36.64 MB / 350.1 MB Notification: Performance of NFEvalConstants.evaluate: time 0.0001671/0.204, allocations: 197.3 kB / 439.7 MB, free: 36.56 MB / 350.1 MB Notification: Performance of NFSimplifyModel.simplify: time 0.0001976/0.2042, allocations: 226.6 kB / 439.9 MB, free: 36.46 MB / 350.1 MB Notification: Performance of NFPackage.collectConstants: time 5.159e-05/0.2043, allocations: 26.58 kB / 439.9 MB, free: 36.46 MB / 350.1 MB Notification: Performance of NFFlatten.collectFunctions: time 5.24e-05/0.2043, allocations: 21.19 kB / 439.9 MB, free: 36.46 MB / 350.1 MB Notification: Performance of NFScalarize.scalarize: time 8.295e-05/0.2044, allocations: 93.86 kB / 440 MB, free: 36.41 MB / 350.1 MB Notification: Performance of NFVerifyModel.verify: time 0.0001022/0.2045, allocations: 175.9 kB / 440.2 MB, free: 36.3 MB / 350.1 MB Notification: Performance of NFConvertDAE.convert: time 0.0001985/0.2047, allocations: 374.2 kB / 440.6 MB, free: 36.14 MB / 350.1 MB Notification: Performance of FrontEnd - DAE generated: time 3.056e-06/0.2047, allocations: 4 kB / 440.6 MB, free: 36.14 MB / 350.1 MB Notification: Performance of FrontEnd: time 6.71e-07/0.2047, allocations: 2.969 kB / 440.6 MB, free: 36.14 MB / 350.1 MB Notification: Performance of Transformations before backend: time 4.769e-06/0.2047, allocations: 0 / 440.6 MB, free: 36.14 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: 71 * Number of variables: 71 Notification: Performance of Generate backend data structure: time 0.001491/0.2062, allocations: 0.8277 MB / 441.4 MB, free: 35.57 MB / 350.1 MB Notification: Performance of prepare preOptimizeDAE: time 2.868e-05/0.2063, allocations: 12.38 kB / 441.4 MB, free: 35.56 MB / 350.1 MB Notification: Performance of preOpt introduceOutputAliases (simulation): time 4.405e-05/0.2063, allocations: 68.92 kB / 441.5 MB, free: 35.5 MB / 350.1 MB Notification: Performance of preOpt normalInlineFunction (simulation): time 6.003e-05/0.2064, allocations: 49.66 kB / 441.5 MB, free: 35.48 MB / 350.1 MB Notification: Performance of preOpt evaluateParameters (simulation): time 0.0006319/0.207, allocations: 427.4 kB / 442 MB, free: 35.18 MB / 350.1 MB Notification: Performance of preOpt simplifyIfEquations (simulation): time 1.722e-05/0.2071, allocations: 23.25 kB / 442 MB, free: 35.17 MB / 350.1 MB Notification: Performance of preOpt expandDerOperator (simulation): time 3.891e-05/0.2071, allocations: 32.12 kB / 442 MB, free: 35.16 MB / 350.1 MB Notification: Performance of preOpt clockPartitioning (simulation): time 0.000351/0.2075, allocations: 305.8 kB / 442.3 MB, free: 35.01 MB / 350.1 MB Notification: Performance of preOpt findStateOrder (simulation): time 1.008e-05/0.2075, allocations: 3.938 kB / 442.3 MB, free: 35 MB / 350.1 MB Notification: Performance of preOpt replaceEdgeChange (simulation): time 2.111e-05/0.2075, allocations: 11.16 kB / 442.3 MB, free: 35 MB / 350.1 MB Notification: Performance of preOpt inlineArrayEqn (simulation): time 5.981e-06/0.2075, allocations: 6.25 kB / 442.3 MB, free: 35 MB / 350.1 MB Notification: Performance of preOpt removeEqualRHS (simulation): time 0.0003142/0.2078, allocations: 221.6 kB / 442.5 MB, free: 34.93 MB / 350.1 MB Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.001119/0.209, allocations: 1.043 MB / 443.6 MB, free: 34.25 MB / 350.1 MB Notification: Performance of preOpt comSubExp (simulation): time 0.0006099/0.2096, allocations: 381.8 kB / 444 MB, free: 34.11 MB / 350.1 MB Notification: Performance of preOpt resolveLoops (simulation): time 0.000179/0.2098, allocations: 158.2 kB / 444.1 MB, free: 34.05 MB / 350.1 MB Notification: Performance of preOpt evalFunc (simulation): time 2.098e-05/0.2098, allocations: 6.938 kB / 444.1 MB, free: 34.05 MB / 350.1 MB Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 1.088e-05/0.2098, allocations: 34.25 kB / 444.2 MB, free: 34.01 MB / 350.1 MB Notification: Performance of pre-optimization done (n=37): time 1.333e-06/0.2098, allocations: 0 / 444.2 MB, free: 34.01 MB / 350.1 MB Notification: Performance of matching and sorting (n=39): time 0.001514/0.2113, allocations: 1.108 MB / 445.3 MB, free: 33.32 MB / 350.1 MB Notification: Performance of inlineWhenForInitialization (initialization): time 1.918e-05/0.2114, allocations: 60.52 kB / 445.3 MB, free: 33.25 MB / 350.1 MB Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.0005948/0.212, allocations: 424.8 kB / 445.7 MB, free: 33.07 MB / 350.1 MB Notification: Performance of collectPreVariables (initialization): time 1.871e-05/0.212, allocations: 36.48 kB / 445.8 MB, free: 33.04 MB / 350.1 MB Notification: Performance of collectInitialEqns (initialization): time 7.449e-05/0.2121, allocations: 206.6 kB / 446 MB, free: 32.86 MB / 350.1 MB Notification: Performance of collectInitialBindings (initialization): time 5.592e-05/0.2121, allocations: 133.8 kB / 446.1 MB, free: 32.76 MB / 350.1 MB Notification: Performance of simplifyInitialFunctions (initialization): time 8.448e-05/0.2122, allocations: 73.89 kB / 446.2 MB, free: 32.71 MB / 350.1 MB Notification: Performance of setup shared object (initialization): time 5.299e-05/0.2123, allocations: 352.7 kB / 446.5 MB, free: 32.38 MB / 350.1 MB Notification: Performance of preBalanceInitialSystem (initialization): time 0.0001608/0.2125, allocations: 109.4 kB / 446.6 MB, free: 32.34 MB / 350.1 MB Notification: Performance of partitionIndependentBlocks (initialization): time 0.0001696/0.2126, allocations: 175.1 kB / 446.8 MB, free: 32.24 MB / 350.1 MB Notification: Performance of analyzeInitialSystem (initialization): time 0.001325/0.214, allocations: 0.6148 MB / 447.4 MB, free: 31.99 MB / 350.1 MB Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.834e-06/0.214, allocations: 3.281 kB / 447.4 MB, free: 31.99 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.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.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. Notification: Performance of matching and sorting (n=52) (initialization): time 0.000742/0.2147, allocations: 0.7982 MB / 448.2 MB, free: 31.38 MB / 350.1 MB Notification: Performance of prepare postOptimizeDAE: time 1.103e-05/0.2147, allocations: 5.094 kB / 448.2 MB, free: 31.38 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (initialization): time 4.278e-06/0.2147, allocations: 7.938 kB / 448.2 MB, free: 31.37 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (initialization): time 0.0002176/0.215, allocations: 98.36 kB / 448.3 MB, free: 31.32 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.0003138/0.2153, allocations: 80.95 kB / 448.4 MB, free: 31.32 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.002134/0.2174, allocations: 7.3 MB / 455.7 MB, free: 23.95 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.0003454/0.2178, allocations: 42.78 kB / 455.7 MB, free: 23.95 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (initialization): time 1.921e-05/0.2178, allocations: 12.06 kB / 455.8 MB, free: 23.94 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: 6 * 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 {(1,8)} Notification: Performance of prepare postOptimizeDAE: time 0.0001261/0.218, allocations: 166.4 kB / 455.9 MB, free: 23.79 MB / 350.1 MB Notification: Performance of postOpt lateInlineFunction (simulation): time 5.716e-05/0.218, allocations: 42.48 kB / 456 MB, free: 23.77 MB / 350.1 MB Notification: Performance of postOpt wrapFunctionCalls (simulation): time 6.834e-05/0.2181, allocations: 55.83 kB / 456 MB, free: 23.73 MB / 350.1 MB Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.006e-06/0.2181, allocations: 5.25 kB / 456 MB, free: 23.73 MB / 350.1 MB Notification: Performance of postOpt constantLinearSystem (simulation): time 1.883e-06/0.2181, allocations: 0 / 456 MB, free: 23.73 MB / 350.1 MB Notification: Performance of postOpt simplifysemiLinear (simulation): time 3.236e-06/0.2181, allocations: 0 / 456 MB, free: 23.73 MB / 350.1 MB Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.0008792/0.219, allocations: 0.8853 MB / 456.9 MB, free: 23.19 MB / 350.1 MB Notification: Performance of postOpt simplifyComplexFunction (simulation): time 2.826e-06/0.219, allocations: 0 / 456.9 MB, free: 23.19 MB / 350.1 MB Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.0002743/0.2193, allocations: 63.8 kB / 457 MB, free: 23.18 MB / 350.1 MB Notification: Performance of postOpt tearingSystem (simulation): time 0.0001959/0.2195, allocations: 75.92 kB / 457 MB, free: 23.16 MB / 350.1 MB Notification: Performance of postOpt inputDerivativesUsed (simulation): time 2.452e-05/0.2195, allocations: 17.94 kB / 457.1 MB, free: 23.15 MB / 350.1 MB Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.0009928/0.2205, allocations: 1.711 MB / 458.8 MB, free: 21.59 MB / 350.1 MB Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 1.213e-06/0.2205, allocations: 3.938 kB / 458.8 MB, free: 21.58 MB / 350.1 MB Notification: Performance of postOpt symbolicJacobian (simulation): time 0.0006663/0.2212, allocations: 0.6207 MB / 459.4 MB, free: 21.25 MB / 350.1 MB Notification: Performance of postOpt removeConstants (simulation): time 5.705e-05/0.2213, allocations: 116.2 kB / 459.5 MB, free: 21.13 MB / 350.1 MB Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 4.509e-05/0.2213, allocations: 7.812 kB / 459.5 MB, free: 21.12 MB / 350.1 MB Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.000355/0.2217, allocations: 40.02 kB / 459.6 MB, free: 21.12 MB / 350.1 MB Notification: Performance of postOpt findZeroCrossings (simulation): time 5.29e-05/0.2218, allocations: 30.83 kB / 459.6 MB, free: 21.11 MB / 350.1 MB Notification: Performance of postOpt collapseArrayExpressions (simulation): time 1.649e-05/0.2218, allocations: 10.84 kB / 459.6 MB, free: 21.11 MB / 350.1 MB Notification: Performance of sorting global known variables: time 0.000498/0.2223, allocations: 325.4 kB / 459.9 MB, free: 20.97 MB / 350.1 MB Notification: Performance of sort global known variables: time 1.6e-07/0.2223, allocations: 0 / 459.9 MB, free: 20.97 MB / 350.1 MB Notification: Performance of remove unused functions: time 0.0004539/0.2227, allocations: 82.69 kB / 460 MB, free: 20.96 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 (31): * Single equations (assignments): 30 * 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 {(1,8)} Notification: Performance of Backend phase and start with SimCode phase: time 0.0008077/0.2236, allocations: 1.16 MB / 461.2 MB, free: 20.09 MB / 350.1 MB Notification: Performance of simCode: created initialization part: time 0.0005902/0.2242, allocations: 0.6409 MB / 461.8 MB, free: 19.64 MB / 350.1 MB Notification: Performance of simCode: created event and clocks part: time 1.592e-06/0.2242, allocations: 320 / 461.8 MB, free: 19.64 MB / 350.1 MB Notification: Performance of simCode: created simulation system equations: time 0.0002919/0.2245, allocations: 297.9 kB / 462.1 MB, free: 19.46 MB / 350.1 MB Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0003723/0.2248, allocations: 55.58 kB / 462.1 MB, free: 19.43 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.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. Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.00501/0.2299, allocations: 4.931 MB / 467.1 MB, free: 15.98 MB / 350.1 MB Notification: Performance of simCode: some other stuff during SimCode phase: time 0.0001864/0.2301, allocations: 0.8328 MB / 467.9 MB, free: 15.28 MB / 350.1 MB Notification: Performance of simCode: alias equations: time 0.0001464/0.2302, allocations: 46.23 kB / 468 MB, free: 15.27 MB / 350.1 MB Notification: Performance of simCode: all other stuff during SimCode phase: time 0.000152/0.2304, allocations: 132 kB / 468.1 MB, free: 15.18 MB / 350.1 MB Notification: Performance of SimCode: time 3.21e-07/0.2304, allocations: 0 / 468.1 MB, free: 15.18 MB / 350.1 MB Notification: Performance of buildModelFMU: Generate the FMI files: time 0.02648/0.2569, allocations: 7.642 MB / 475.7 MB, free: 14.56 MB / 350.1 MB Notification: Performance of buildModelFMU: configured platform static using cached values: time 0.0001405/0.257, allocations: 241.8 kB / 476 MB, free: 14.3 MB / 350.1 MB Notification: Performance of buildModelFMU: Generate platform static: time 1.655/1.912, allocations: 1.094 kB / 476 MB, free: 14.3 MB / 350.1 MB (rm -f AES_AES.Coursework.ElecSys_case_studies.Primary_secondary_tertiary.pipe ; mkfifo AES_AES.Coursework.ElecSys_case_studies.Primary_secondary_tertiary.pipe ; head -c 1048576 < AES_AES.Coursework.ElecSys_case_studies.Primary_secondary_tertiary.pipe >> ../files/AES_AES.Coursework.ElecSys_case_studies.Primary_secondary_tertiary.sim & /home/hudson/saved_omc/OMSimulator/install/bin/OMSimulator --tempDir=temp_AES_AES_Coursework_ElecSys_case_studies_Primary_secondary_tertiary_fmu --startTime=0 --stopTime=2000 --timeout=50 --tolerance=1e-06 AES_AES_Coursework_ElecSys_case_studies_Primary_secondary_tertiary.fmu > AES_AES.Coursework.ElecSys_case_studies.Primary_secondary_tertiary.pipe 2>&1)