Running command: translateModel(Buildings.Fluid.HeatExchangers.CoolingTowers.Examples.FixedApproachWetBulb,tolerance=1e-06,outputFormat="empty",numberOfIntervals=5000,variableFilter="",fileNamePrefix="Buildings_5.0.1_Buildings.Fluid.HeatExchangers.CoolingTowers.Examples.FixedApproachWetBulb")
Notification: Performance of loadModel(Buildings): time 3.891/3.891, allocations: 402 MB / 416.6 MB, free: 10.22 MB / 346.7 MB
Notification: Performance of FrontEnd - loaded program: time 4.133e-05/4.154e-05, allocations: 4 kB / 0.501 GB, free: 8.258 MB / 410.7 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.215/0.2151, allocations: 92.68 MB / 0.5915 GB, free: 11.4 MB / 0.4948 GB
Notification: Performance of NFInst.instantiate(Buildings.Fluid.HeatExchangers.CoolingTowers.Examples.FixedApproachWetBulb): time 0.5986/0.8137, allocations: 69.32 MB / 0.6592 GB, free: 2.316 MB / 0.5261 GB
Notification: Performance of NFInst.instExpressions: time 0.2355/1.049, allocations: 137.8 MB / 0.7937 GB, free: 15.23 MB / 0.6667 GB
Notification: Performance of NFInst.updateImplicitVariability: time 0.004424/1.054, allocations: 123.5 kB / 0.7938 GB, free: 15.11 MB / 0.6667 GB
Notification: Performance of NFTyping.typeComponents: time 0.00487/1.059, allocations: 0.9169 MB / 0.7947 GB, free: 14.19 MB / 0.6667 GB
Notification: Performance of NFTyping.typeBindings: time 0.01145/1.07, allocations: 2.524 MB / 0.7972 GB, free: 11.66 MB / 0.6667 GB
Notification: Performance of NFTyping.typeClassSections: time 0.01155/1.082, allocations: 2.691 MB / 0.7998 GB, free: 8.965 MB / 0.6667 GB
Notification: Performance of NFFlatten.flatten: time 0.008684/1.091, allocations: 2.861 MB / 0.8026 GB, free: 6.094 MB / 0.6667 GB
Notification: Performance of NFFlatten.resolveConnections: time 0.003715/1.094, allocations: 1.593 MB / 0.8042 GB, free: 4.492 MB / 0.6667 GB
Notification: Performance of NFEvalConstants.evaluate: time 0.004444/1.099, allocations: 1.367 MB / 0.8055 GB, free: 3.121 MB / 0.6667 GB
Notification: Performance of NFSimplifyModel.simplify: time 0.002922/1.102, allocations: 1.024 MB / 0.8065 GB, free: 2.094 MB / 0.6667 GB
Notification: Performance of NFFlatten.collectFunctions: time 0.005951/1.108, allocations: 1.474 MB / 0.8079 GB, free: 0.6172 MB / 0.6667 GB
Notification: Performance of NFPackage.collectConstants: time 0.001383/1.109, allocations: 112 kB / 0.8081 GB, free: 0.5078 MB / 0.6667 GB
Notification: Performance of NFScalarize.scalarize: time 0.00108/1.11, allocations: 474.1 kB / 0.8085 GB, free: 44 kB / 0.6667 GB
Notification: Performance of NFVerifyModel.verify: time 0.001139/1.111, allocations: 232 kB / 0.8087 GB, free: 15.81 MB / 0.6823 GB
Notification: Performance of NFConvertDAE.convert: time 0.007706/1.119, allocations: 3.26 MB / 0.8119 GB, free: 12.55 MB / 0.6823 GB
Notification: Performance of FrontEnd - DAE generated: time 4.037e-06/1.119, allocations: 0 / 0.8119 GB, free: 12.55 MB / 0.6823 GB
Notification: Performance of FrontEnd: time 3.045e-06/1.119, allocations: 0 / 0.8119 GB, free: 12.55 MB / 0.6823 GB
Notification: Performance of Transformations before backend: time 0.0001215/1.119, allocations: 4 kB / 0.8119 GB, free: 12.55 MB / 0.6823 GB
Notification: Model statistics after passing the front-end and creating the data structures used by the back-end:
 * Number of equations: 474
 * Number of variables: 474
Notification: Performance of Generate backend data structure: time 0.007034/1.126, allocations: 2.423 MB / 0.8143 GB, free: 10.05 MB / 0.6823 GB
Notification: Performance of prepare preOptimizeDAE: time 6.281e-05/1.127, allocations: 15.97 kB / 0.8143 GB, free: 10.03 MB / 0.6823 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.007168/1.134, allocations: 0.7302 MB / 0.815 GB, free: 9.297 MB / 0.6823 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.006058/1.14, allocations: 1.858 MB / 0.8168 GB, free: 7.391 MB / 0.6823 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0007847/1.141, allocations: 215.6 kB / 0.817 GB, free: 7.18 MB / 0.6823 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.0006442/1.141, allocations: 191.9 kB / 0.8172 GB, free: 6.992 MB / 0.6823 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.007853/1.149, allocations: 2.164 MB / 0.8193 GB, free: 4.73 MB / 0.6823 GB
Notification: Performance of preOpt findStateOrder (simulation): time 7.288e-05/1.149, allocations: 7.938 kB / 0.8193 GB, free: 4.723 MB / 0.6823 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.0003194/1.15, allocations: 80 kB / 0.8194 GB, free: 4.645 MB / 0.6823 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 9.645e-05/1.15, allocations: 51.95 kB / 0.8195 GB, free: 4.594 MB / 0.6823 GB
Notification: Performance of preOpt removeEqualRHS (simulation): time 0.00927/1.159, allocations: 2.203 MB / 0.8216 GB, free: 2.387 MB / 0.6823 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 0.02274/1.182, allocations: 9.135 MB / 0.8305 GB, free: 8.809 MB / 0.698 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.006772/1.189, allocations: 1.532 MB / 0.832 GB, free: 7.258 MB / 0.698 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.007695/1.196, allocations: 2.784 MB / 0.8347 GB, free: 4.262 MB / 0.698 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.003591/1.2, allocations: 0.8496 MB / 0.8356 GB, free: 3.387 MB / 0.698 GB
Notification: Performance of preOpt simplifyInStream (simulation): time 0.001081/1.201, allocations: 138.5 kB / 0.8357 GB, free: 3.25 MB / 0.698 GB
Notification: Performance of pre-optimization done (n=121): time 5.47e-06/1.201, allocations: 0 / 0.8357 GB, free: 3.25 MB / 0.698 GB
Notification: Performance of matching and sorting (n=123): time 0.02249/1.224, allocations: 4.402 MB / 0.84 GB, free: 14.72 MB / 0.7136 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 9.382e-05/1.224, allocations: 141.5 kB / 0.8401 GB, free: 14.55 MB / 0.7136 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.003464/1.227, allocations: 1.533 MB / 0.8416 GB, free: 12.98 MB / 0.7136 GB
Notification: Performance of collectPreVariables (initialization): time 0.0003669/1.228, allocations: 49.7 kB / 0.8417 GB, free: 12.93 MB / 0.7136 GB
Notification: Performance of collectInitialEqns (initialization): time 0.001415/1.229, allocations: 1.034 MB / 0.8427 GB, free: 11.88 MB / 0.7136 GB
Notification: Performance of collectInitialBindings (initialization): time 0.0007369/1.23, allocations: 418 kB / 0.8431 GB, free: 11.47 MB / 0.7136 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0001514/1.23, allocations: 32 kB / 0.8431 GB, free: 11.44 MB / 0.7136 GB
Notification: Performance of setup shared object (initialization): time 0.0001835/1.23, allocations: 365.9 kB / 0.8435 GB, free: 11.07 MB / 0.7136 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.002879/1.233, allocations: 0.5856 MB / 0.844 GB, free: 10.49 MB / 0.7136 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.00345/1.237, allocations: 1.007 MB / 0.845 GB, free: 9.312 MB / 0.7136 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.003308/1.24, allocations: 0.7436 MB / 0.8458 GB, free: 8.555 MB / 0.7136 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 1.546e-05/1.24, allocations: 4 kB / 0.8458 GB, free: 8.551 MB / 0.7136 GB
Notification: Performance of matching and sorting (n=185) (initialization): time 0.009894/1.25, allocations: 2.12 MB / 0.8478 GB, free: 6.398 MB / 0.7136 GB
Notification: Performance of prepare postOptimizeDAE: time 0.002302/1.252, allocations: 4.348 MB / 0.8521 GB, free: 1.723 MB / 0.7136 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.58e-05/1.253, allocations: 8 kB / 0.8521 GB, free: 1.715 MB / 0.7136 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.002336/1.255, allocations: 226.3 kB / 0.8523 GB, free: 1.484 MB / 0.7136 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003294/1.258, allocations: 371.4 kB / 0.8527 GB, free: 1.121 MB / 0.7136 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.00692/1.265, allocations: 3.607 MB / 0.8562 GB, free: 13.21 MB / 0.7292 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003445/1.269, allocations: 175.8 kB / 0.8563 GB, free: 13.04 MB / 0.7292 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0004255/1.269, allocations: 79.95 kB / 0.8564 GB, free: 12.96 MB / 0.7292 GB
Notification: Performance of prepare postOptimizeDAE: time 1.462e-05/1.269, allocations: 4 kB / 0.8564 GB, free: 12.96 MB / 0.7292 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.00863/1.278, allocations: 1.887 MB / 0.8583 GB, free: 11.05 MB / 0.7292 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 3.892e-05/1.278, allocations: 12 kB / 0.8583 GB, free: 11.04 MB / 0.7292 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.002145/1.28, allocations: 222.7 kB / 0.8585 GB, free: 10.81 MB / 0.7292 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.003086/1.283, allocations: 355.5 kB / 0.8588 GB, free: 10.46 MB / 0.7292 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.006508/1.29, allocations: 3.617 MB / 0.8624 GB, free: 6.543 MB / 0.7292 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.003242/1.293, allocations: 159.8 kB / 0.8625 GB, free: 6.387 MB / 0.7292 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0003782/1.293, allocations: 75.97 kB / 0.8626 GB, free: 6.312 MB / 0.7292 GB
Notification: Model statistics after passing the back-end for initialization:
 * Number of independent subsystems: 47
 * Number of states: 0 ()
 * Number of discrete variables: 8 ($whenCondition2,$whenCondition1,$PRE.weaDat.conTim1.tStart,weaDat.conTim1.tStart,$PRE.weaDat.conTim.tStart,weaDat.conTim.tStart,$PRE.onOffController.y,onOffController.y)
 * Number of discrete states: 0 ()
 * Top-level inputs: 0
Notification: Strong component statistics for initialization (176):
 * Single equations (assignments): 170
 * Array equations: 1
 * Algorithm blocks: 2
 * Record equations: 0
 * When equations: 0
 * If-equations: 0
 * Equation systems (linear and non-linear blocks): 0
 * Torn equation systems: 3
 * Mixed (continuous/discrete) equation systems: 0
Notification: Torn system details for strict tearing set:
 * Linear torn systems: 0
 * Non-linear torn systems: 3 {1 4,1 2,1 2}
Notification: Performance of prepare postOptimizeDAE: time 0.001641/1.295, allocations: 0.5098 MB / 0.8631 GB, free: 5.797 MB / 0.7292 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.0006601/1.296, allocations: 209.7 kB / 0.8633 GB, free: 5.59 MB / 0.7292 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01038/1.306, allocations: 2.111 MB / 0.8653 GB, free: 3.453 MB / 0.7292 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.008298/1.315, allocations: 1.56 MB / 0.8669 GB, free: 1.867 MB / 0.7292 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.216e-05/1.315, allocations: 3.938 kB / 0.8669 GB, free: 1.863 MB / 0.7292 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.001672/1.316, allocations: 0.4941 MB / 0.8674 GB, free: 1.348 MB / 0.7292 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.0004562/1.317, allocations: 20 kB / 0.8674 GB, free: 1.328 MB / 0.7292 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.0029/1.32, allocations: 175.7 kB / 0.8675 GB, free: 1.156 MB / 0.7292 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0003239/1.32, allocations: 97.16 kB / 0.8676 GB, free: 1.062 MB / 0.7292 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 0.006794/1.327, allocations: 1.163 MB / 0.8688 GB, free: 15.88 MB / 0.7448 GB
Error: post-optimization module createDAEmodeBDAE (simulation) failed.