Running command: translateModel(Buildings.Fluid.HeatExchangers.Ground.Boreholes.BaseClasses.Examples.HexInternalElement,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Fluid.HeatExchangers.Ground.Boreholes.BaseClasses.Examples.HexInternalElement")
Notification: Performance of loadModel(Buildings): time 3.736/3.736, allocations: 402 MB / 416.6 MB, free: 10.19 MB / 346.7 MB
Notification: Performance of FrontEnd - loaded program: time 2.965e-05/2.988e-05, allocations: 4 kB / 0.501 GB, free: 8.227 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2178/0.2178, allocations: 92.69 MB / 0.5915 GB, free: 11.36 MB / 0.4948 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.Ground.Boreholes.BaseClasses.Examples.HexInternalElement): time 0.5752/0.7931, allocations: 32.48 MB / 0.6232 GB, free: 11.77 MB / 0.5105 GB
Notification: Performance of NFInst.instExpressions: time 0.0217/0.8148, allocations: 9.309 MB / 0.6323 GB, free: 5.363 MB / 0.5105 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.002724/0.8176, allocations: 63.25 kB / 0.6324 GB, free: 5.344 MB / 0.5105 GB
Notification: Performance of NFTyping.typeComponents: time 0.002972/0.8206, allocations: 0.5846 MB / 0.6329 GB, free: 4.988 MB / 0.5105 GB
Notification: Performance of NFTyping.typeBindings: time 0.008269/0.8289, allocations: 1.667 MB / 0.6346 GB, free: 3.832 MB / 0.5105 GB
Notification: Performance of NFTyping.typeClassSections: time 0.005401/0.8344, allocations: 1.04 MB / 0.6356 GB, free: 3.34 MB / 0.5105 GB
Notification: Performance of NFFlatten.flatten: time 0.005887/0.8403, allocations: 1.671 MB / 0.6372 GB, free: 2.336 MB / 0.5105 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.001886/0.8422, allocations: 0.6736 MB / 0.6379 GB, free: 2.094 MB / 0.5105 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.002997/0.8453, allocations: 0.819 MB / 0.6387 GB, free: 1.719 MB / 0.5105 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002242/0.8475, allocations: 0.5997 MB / 0.6393 GB, free: 1.496 MB / 0.5105 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.005069/0.8526, allocations: 1.04 MB / 0.6403 GB, free: 1.23 MB / 0.5105 GB
Notification: Performance of NFPackage.collectConstants: time 0.0009642/0.8537, allocations: 65.72 kB / 0.6403 GB, free: 1.23 MB / 0.5105 GB
Notification: Performance of NFScalarize.scalarize: time 0.0007818/0.8545, allocations: 218.7 kB / 0.6405 GB, free: 1.125 MB / 0.5105 GB
Notification: Performance of NFVerifyModel.verify: time 0.001155/0.8557, allocations: 144.1 kB / 0.6407 GB, free: 1.125 MB / 0.5105 GB
Notification: Performance of NFConvertDAE.convert: time 0.005194/0.8609, allocations: 1.956 MB / 0.6426 GB, free: 0.5312 MB / 0.5105 GB
Notification: Performance of FrontEnd - DAE generated: time 4.389e-06/0.8609, allocations: 4 kB / 0.6426 GB, free: 0.5273 MB / 0.5105 GB
Notification: Performance of FrontEnd: time 3.917e-06/0.861, allocations: 1.688 kB / 0.6426 GB, free: 0.5273 MB / 0.5105 GB
Notification: Performance of Transformations before backend: time 7.713e-05/0.861, allocations: 0 / 0.6426 GB, free: 0.5273 MB / 0.5105 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 236
 * Number of variables: 236
Notification: Performance of Generate backend data structure: time 0.004063/0.8651, allocations: 1.316 MB / 0.6439 GB, free: 15.51 MB / 0.5261 GB
Notification: Performance of prepare preOptimizeDAE: time 5.174e-05/0.8652, allocations: 7.938 kB / 0.6439 GB, free: 15.51 MB / 0.5261 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.001048/0.8663, allocations: 167.7 kB / 0.644 GB, free: 15.43 MB / 0.5261 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.003402/0.8697, allocations: 1.058 MB / 0.6451 GB, free: 14.58 MB / 0.5261 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 9.518e-05/0.8698, allocations: 70.69 kB / 0.6451 GB, free: 14.55 MB / 0.5261 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0002461/0.8701, allocations: 96.97 kB / 0.6452 GB, free: 14.52 MB / 0.5261 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.003806/0.8739, allocations: 1.087 MB / 0.6463 GB, free: 13.78 MB / 0.5261 GB
Notification: Performance of preOpt findStateOrder (simulation): time 4.701e-05/0.874, allocations: 5.312 kB / 0.6463 GB, free: 13.78 MB / 0.5261 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0001449/0.8741, allocations: 42.98 kB / 0.6463 GB, free: 13.75 MB / 0.5261 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 6.046e-05/0.8742, allocations: 26.12 kB / 0.6464 GB, free: 13.75 MB / 0.5261 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.003057/0.8773, allocations: 0.7753 MB / 0.6471 GB, free: 13.36 MB / 0.5261 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 0.009648/0.887, allocations: 5.393 MB / 0.6524 GB, free: 8.492 MB / 0.5261 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.002553/0.8896, allocations: 0.6215 MB / 0.653 GB, free: 8.137 MB / 0.5261 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.0006358/0.8902, allocations: 276.5 kB / 0.6533 GB, free: 7.844 MB / 0.5261 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 5.43e-05/0.8903, allocations: 51.31 kB / 0.6533 GB, free: 7.789 MB / 0.5261 GB
Notification: Performance of pre-optimization done (n=57): time 3.777e-06/0.8903, allocations: 0 / 0.6533 GB, free: 7.789 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=59): time 0.009546/0.8999, allocations: 2.48 MB / 0.6557 GB, free: 6.074 MB / 0.5261 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 6.603e-05/0.9, allocations: 114 kB / 0.6558 GB, free: 5.945 MB / 0.5261 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.001897/0.9019, allocations: 0.849 MB / 0.6567 GB, free: 5.457 MB / 0.5261 GB
Notification: Performance of collectPreVariables (initialization): time 0.0001732/0.9021, allocations: 38.17 kB / 0.6567 GB, free: 5.418 MB / 0.5261 GB
Notification: Performance of collectInitialEqns (initialization): time 0.0006279/0.9028, allocations: 0.5467 MB / 0.6572 GB, free: 4.93 MB / 0.5261 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0003353/0.9031, allocations: 219.6 kB / 0.6575 GB, free: 4.738 MB / 0.5261 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 6.083e-05/0.9032, allocations: 15 kB / 0.6575 GB, free: 4.727 MB / 0.5261 GB
Notification: Performance of setup shared object (initialization): time 0.0001542/0.9033, allocations: 337.8 kB / 0.6578 GB, free: 4.398 MB / 0.5261 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.0008518/0.9042, allocations: 248.8 kB / 0.658 GB, free: 4.277 MB / 0.5261 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.001049/0.9053, allocations: 491 kB / 0.6585 GB, free: 3.855 MB / 0.5261 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.001003/0.9063, allocations: 334.7 kB / 0.6588 GB, free: 3.68 MB / 0.5261 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 7.053e-06/0.9063, allocations: 0.9688 kB / 0.6588 GB, free: 3.68 MB / 0.5261 GB
Notification: Performance of matching and sorting (n=107) (initialization): time 0.002954/0.9093, allocations: 0.9386 MB / 0.6597 GB, free: 3.18 MB / 0.5261 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0009214/0.9103, allocations: 2.195 MB / 0.6619 GB, free: 0.8359 MB / 0.5261 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.766e-05/0.9103, allocations: 6.594 kB / 0.6619 GB, free: 0.8359 MB / 0.5261 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0004922/0.9108, allocations: 97.44 kB / 0.662 GB, free: 0.7812 MB / 0.5261 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.004668/0.9155, allocations: 380.9 kB / 0.6623 GB, free: 0.6758 MB / 0.5261 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008428/0.924, allocations: 6.321 MB / 0.6685 GB, free: 10.36 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.00205/0.9261, allocations: 95 kB / 0.6686 GB, free: 10.31 MB / 0.5417 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001741/0.9263, allocations: 44.27 kB / 0.6686 GB, free: 10.3 MB / 0.5417 GB
Notification: Performance of prepare postOptimizeDAE: time 1.433e-05/0.9263, allocations: 3.375 kB / 0.6687 GB, free: 10.3 MB / 0.5417 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.002408/0.9287, allocations: 0.772 MB / 0.6694 GB, free: 9.895 MB / 0.5417 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.274e-05/0.9288, allocations: 7.469 kB / 0.6694 GB, free: 9.895 MB / 0.5417 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.0003651/0.9292, allocations: 99.78 kB / 0.6695 GB, free: 9.832 MB / 0.5417 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.001396/0.9306, allocations: 189 kB / 0.6697 GB, free: 9.789 MB / 0.5417 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.005666/0.9363, allocations: 5.005 MB / 0.6746 GB, free: 4.723 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.001815/0.9382, allocations: 84.5 kB / 0.6747 GB, free: 4.68 MB / 0.5417 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0001274/0.9383, allocations: 31.12 kB / 0.6747 GB, free: 4.676 MB / 0.5417 GB
Warning: Assuming fixed start value for the following 1 variables:
         hex.vol1.dynBal.m:VARIABLE(min = max(0.0, 0.0) start = hex.vol1.V * hex.vol1.rho_start unit = "kg" fixed = true stateSelect=StateSelect.prefer protected = true )  "Mass of fluid" type: Real
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 25
 * Number of states: 0 ()
 * Number of discrete variables: 0 ()
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (95):
 * Single equations (assignments): 88
 * Array equations: 0
 * Algorithm blocks: 0
 * Record equations: 1
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 3
 * Torn equation systems: 3
 * Mixed (continuous/discrete) equation systems: 0
Notification: Equation system details:
 * Constant Jacobian: 0
 * Linear Jacobian (size,density): 0
 * Non-linear Jacobian: 3 {1,1,1}
 * Without analytic Jacobian: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 3 {(1,100.0%) 3,(1,100.0%) 3,(1,100.0%) 3}
 * Non-linear torn systems: 0
Notification: Performance of prepare postOptimizeDAE: time 0.001104/0.9394, allocations: 320.4 kB / 0.675 GB, free: 4.43 MB / 0.5417 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0004928/0.9399, allocations: 105.8 kB / 0.6751 GB, free: 4.375 MB / 0.5417 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.002641/0.9426, allocations: 0.7685 MB / 0.6758 GB, free: 3.91 MB / 0.5417 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.002087/0.9447, allocations: 0.715 MB / 0.6765 GB, free: 3.43 MB / 0.5417 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.118e-05/0.9448, allocations: 1.344 kB / 0.6765 GB, free: 3.43 MB / 0.5417 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.001057/0.9458, allocations: 270.1 kB / 0.6768 GB, free: 3.184 MB / 0.5417 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0002926/0.9462, allocations: 20 kB / 0.6768 GB, free: 3.168 MB / 0.5417 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.001417/0.9476, allocations: 68.66 kB / 0.6769 GB, free: 3.133 MB / 0.5417 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0001634/0.9478, allocations: 47.33 kB / 0.6769 GB, free: 3.109 MB / 0.5417 GB
Error: Internal error IndexReduction.pantelidesIndexReduction failed! System is structurally singular and cannot be handled because the number of unassigned equations is larger than the number of states. Use -d=bltdump to get more information.
Error: Internal error Transformation Module PFPlusExt index Reduction Method Pantelides failed!
Notification: Performance of <failed> postOpt createDAEmodeBDAE (simulation): time 0.008387/0.9562, allocations: 0.997 MB / 0.6779 GB, free: 2.508 MB / 0.5417 GB
Error: post-optimization module createDAEmodeBDAE (simulation) failed.