Warning: Requested package Modelica of version 3.2.2, but this package was already loaded with version 3.2.1. You might experience problems if these versions are incompatible.
Notification: Performance of loadModel(Buildings): time 2.677/2.677, allocations: 318 MB / 323.2 MB, free: 13.4 MB / 264.6 MB
Notification: Performance of FrontEnd - loaded program: time 6.699e-06/6.808e-06, allocations: 0 / 398.3 MB, free: 2.289 MB / 328.6 MB
Notification: Performance of FrontEnd - Absyn->SCode: time 0.2827/0.2827, allocations: 72.82 MB / 471.1 MB, free: 1.914 MB / 376.6 MB
Notification: Performance of FrontEnd - scodeFlatten: time 4.524/4.807, allocations: 2.408 GB / 2.868 GB, free: 34.74 MB / 0.6178 GB
Notification: Performance of FrontEnd - mkProgramGraph: time 0.0002918/4.807, allocations: 95.34 kB / 2.868 GB, free: 34.69 MB / 0.6178 GB
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:36:63-36:71:writable] Warning: Non-array modification '"W"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:40:6-40:14:writable] Warning: Non-array modification '"K"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:41:6-41:24:writable] Warning: Non-array modification '"degC"' for array component, possibly due to missing 'each'.
[/var/lib/hudson/slave/workspace/OpenModelica_TEST_LIBS/OpenModelica/OMCompiler/build/lib/omlibrary/Buildings 2.1.0/Fluid/SolarCollectors/BaseClasses/EN12975SolarGain.mo:42:6-42:28:writable] Warning: Non-array modification '"Temperature"' for array component, possibly due to missing 'each'.
Notification: Performance of FrontEnd: time 2.002/6.809, allocations: 0.4941 GB / 3.362 GB, free: 33.92 MB / 0.6178 GB
Notification: Performance of Transformations before backend: time 0.000579/6.81, allocations: 103.9 kB / 3.362 GB, free: 33.82 MB / 0.6178 GB
Notification: Performance of Generate backend data structure: time 0.01319/6.823, allocations: 4.24 MB / 3.366 GB, free: 29.48 MB / 0.6178 GB
Notification: Performance of prepare preOptimizeDAE: time 3.817e-05/6.823, allocations: 8.031 kB / 3.366 GB, free: 29.48 MB / 0.6178 GB
Notification: Performance of preOpt normalInlineFunction (simulation): time 0.004514/6.828, allocations: 0.5565 MB / 3.367 GB, free: 28.91 MB / 0.6178 GB
Notification: Performance of preOpt evaluateParameters (simulation): time 0.03501/6.863, allocations: 11.72 MB / 3.378 GB, free: 17.06 MB / 0.6178 GB
Notification: Performance of preOpt simplifyIfEquations (simulation): time 0.0002137/6.863, allocations: 108 kB / 3.379 GB, free: 16.96 MB / 0.6178 GB
Notification: Performance of preOpt expandDerOperator (simulation): time 0.001407/6.864, allocations: 211.9 kB / 3.379 GB, free: 16.75 MB / 0.6178 GB
Notification: Performance of preOpt removeEqualFunctionCalls (simulation): time 0.01055/6.875, allocations: 3.882 MB / 3.383 GB, free: 12.86 MB / 0.6178 GB
Notification: Performance of preOpt clockPartitioning (simulation): time 0.01291/6.888, allocations: 3.926 MB / 3.386 GB, free: 8.773 MB / 0.6178 GB
Notification: Performance of preOpt findStateOrder (simulation): time 0.0001508/6.888, allocations: 3.938 kB / 3.386 GB, free: 8.77 MB / 0.6178 GB
Notification: Performance of preOpt replaceEdgeChange (simulation): time 0.001137/6.889, allocations: 8 kB / 3.386 GB, free: 8.762 MB / 0.6178 GB
Notification: Performance of preOpt inlineArrayEqn (simulation): time 0.0001154/6.889, allocations: 108 kB / 3.386 GB, free: 8.656 MB / 0.6178 GB
Notification: Performance of preOpt removeSimpleEquations (simulation): time 0.2603/7.15, allocations: 16.72 MB / 3.403 GB, free: 132.3 MB / 0.6178 GB
Notification: Performance of preOpt comSubExp (simulation): time 0.006188/7.156, allocations: 2.663 MB / 3.405 GB, free: 132.3 MB / 0.6178 GB
Notification: Performance of preOpt resolveLoops (simulation): time 0.003179/7.159, allocations: 1.417 MB / 3.407 GB, free: 132.2 MB / 0.6178 GB
Notification: Performance of preOpt evalFunc (simulation): time 0.003061/7.162, allocations: 4.42 MB / 3.411 GB, free: 127.2 MB / 0.6178 GB
Notification: Performance of preOpt encapsulateWhenConditions (simulation): time 0.004065/7.166, allocations: 1.575 MB / 3.413 GB, free: 127.1 MB / 0.6178 GB
Notification: Performance of pre-optimization done (n=251): time 6.937e-06/7.166, allocations: 0 / 3.413 GB, free: 127.1 MB / 0.6178 GB
Notification: Performance of matching and sorting (n=251): time 0.0138/7.18, allocations: 3.168 MB / 3.416 GB, free: 127 MB / 0.6178 GB
Notification: Performance of inlineWhenForInitialization (initialization): time 0.0001073/7.18, allocations: 369 kB / 3.416 GB, free: 126.6 MB / 0.6178 GB
Notification: Performance of selectInitializationVariablesDAE (initialization): time 0.00653/7.187, allocations: 2.767 MB / 3.419 GB, free: 126.3 MB / 0.6178 GB
Notification: Performance of collectPreVariables (initialization): time 0.0007443/7.188, allocations: 28.27 kB / 3.419 GB, free: 126.3 MB / 0.6178 GB
Notification: Performance of collectInitialEqns (initialization): time 0.00214/7.19, allocations: 1.259 MB / 3.42 GB, free: 125.9 MB / 0.6178 GB
Notification: Performance of collectInitialBindings (initialization): time 0.001894/7.192, allocations: 0.8248 MB / 3.421 GB, free: 125.5 MB / 0.6178 GB
Notification: Performance of simplifyInitialFunctions (initialization): time 0.0003831/7.192, allocations: 3.5 kB / 3.421 GB, free: 125.5 MB / 0.6178 GB
Notification: Performance of setup shared object (initialization): time 0.0002577/7.192, allocations: 423.6 kB / 3.421 GB, free: 125.2 MB / 0.6178 GB
Notification: Performance of preBalanceInitialSystem (initialization): time 0.003007/7.195, allocations: 1.288 MB / 3.422 GB, free: 125.2 MB / 0.6178 GB
Notification: Performance of partitionIndependentBlocks (initialization): time 0.003858/7.199, allocations: 1.947 MB / 3.424 GB, free: 124.5 MB / 0.6178 GB
Notification: Performance of analyzeInitialSystem (initialization): time 0.009295/7.209, allocations: 2.059 MB / 3.426 GB, free: 124.4 MB / 0.6178 GB
Notification: Performance of solveInitialSystemEqSystem (initialization): time 3.463e-05/7.209, allocations: 6.031 kB / 3.426 GB, free: 124.4 MB / 0.6178 GB
Notification: Performance of matching and sorting (n=370) (initialization): time 0.01761/7.226, allocations: 4.45 MB / 3.431 GB, free: 124.1 MB / 0.6178 GB
Notification: Performance of prepare postOptimizeDAE: time 0.001338/7.228, allocations: 7.193 MB / 3.438 GB, free: 116.6 MB / 0.6178 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 5.823e-05/7.228, allocations: 17.89 kB / 3.438 GB, free: 116.6 MB / 0.6178 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.003209/7.231, allocations: 0.5355 MB / 3.438 GB, free: 116.6 MB / 0.6178 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005309/7.236, allocations: 0.7388 MB / 3.439 GB, free: 116.6 MB / 0.6178 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008706/7.245, allocations: 5.022 MB / 3.444 GB, free: 113.6 MB / 0.6178 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005405/7.251, allocations: 307 kB / 3.444 GB, free: 113.5 MB / 0.6178 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0008766/7.251, allocations: 145.2 kB / 3.444 GB, free: 113.5 MB / 0.6178 GB
Notification: Performance of prepare postOptimizeDAE: time 1.225e-05/7.252, allocations: 2.438 kB / 3.444 GB, free: 113.5 MB / 0.6178 GB
Notification: Performance of postOpt replaceHomotopyWithSimplified (initialization): time 0.01619/7.268, allocations: 4.073 MB / 3.448 GB, free: 113.4 MB / 0.6178 GB
Notification: Performance of postOpt simplifyComplexFunction (initialization): time 6.507e-05/7.268, allocations: 20.56 kB / 3.448 GB, free: 113.4 MB / 0.6178 GB
Notification: Performance of postOpt tearingSystem (initialization): time 0.003748/7.272, allocations: 0.5688 MB / 3.449 GB, free: 113.4 MB / 0.6178 GB
Notification: Performance of postOpt solveSimpleEquations (initialization): time 0.005098/7.277, allocations: 0.6992 MB / 3.45 GB, free: 113.4 MB / 0.6178 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (initialization): time 0.008113/7.285, allocations: 4.403 MB / 3.454 GB, free: 110.9 MB / 0.6178 GB
Notification: Performance of postOpt simplifyAllExpressions (initialization): time 0.005091/7.29, allocations: 287 kB / 3.454 GB, free: 110.9 MB / 0.6178 GB
Notification: Performance of postOpt collapseArrayExpressions (initialization): time 0.0008803/7.291, allocations: 137.4 kB / 3.454 GB, free: 110.9 MB / 0.6178 GB
Notification: Performance of prepare postOptimizeDAE: time 0.0004489/7.291, allocations: 161.9 kB / 3.454 GB, free: 110.7 MB / 0.6178 GB
Notification: Performance of postOpt lateInlineFunction (simulation): time 0.001154/7.293, allocations: 327.8 kB / 3.455 GB, free: 110.5 MB / 0.6178 GB
Notification: Performance of postOpt wrapFunctionCalls (simulation): time 0.01692/7.309, allocations: 4.051 MB / 3.459 GB, free: 110.3 MB / 0.6178 GB
Notification: Performance of postOpt inlineArrayEqn (simulation): time 3.508e-05/7.31, allocations: 26.47 kB / 3.459 GB, free: 110.3 MB / 0.6178 GB
Notification: Performance of postOpt constantLinearSystem (simulation): time 1.022e-05/7.31, allocations: 0 / 3.459 GB, free: 110.3 MB / 0.6178 GB
Notification: Performance of postOpt simplifysemiLinear (simulation): time 0.01254/7.322, allocations: 3.122 MB / 3.462 GB, free: 110 MB / 0.6178 GB
Notification: Performance of postOpt removeSimpleEquations (simulation): time 0.02354/7.346, allocations: 7.271 MB / 3.469 GB, free: 109.5 MB / 0.6178 GB
Notification: Performance of postOpt simplifyComplexFunction (simulation): time 1.313e-05/7.346, allocations: 0 / 3.469 GB, free: 109.5 MB / 0.6178 GB
Notification: Performance of postOpt solveSimpleEquations (simulation): time 0.004235/7.35, allocations: 0.5739 MB / 3.469 GB, free: 109.5 MB / 0.6178 GB
Notification: Performance of postOpt tearingSystem (simulation): time 0.0005927/7.351, allocations: 90.23 kB / 3.47 GB, free: 109.5 MB / 0.6178 GB
Notification: Performance of postOpt inputDerivativesUsed (simulation): time 0.0006065/7.351, allocations: 60.81 kB / 3.47 GB, free: 109.5 MB / 0.6178 GB
Notification: Performance of postOpt calculateStrongComponentJacobians (simulation): time 0.002383/7.354, allocations: 2.027 MB / 3.472 GB, free: 107.7 MB / 0.6178 GB
Notification: Performance of postOpt calculateStateSetsJacobians (simulation): time 5.675e-06/7.354, allocations: 0 / 3.472 GB, free: 107.7 MB / 0.6178 GB
Notification: Performance of postOpt detectJacobianSparsePattern (simulation): time 0.01697/7.371, allocations: 5.282 MB / 3.477 GB, free: 107.2 MB / 0.6178 GB
Notification: Performance of postOpt removeConstants (simulation): time 0.003255/7.374, allocations: 0.9439 MB / 3.478 GB, free: 107 MB / 0.6178 GB
Notification: Performance of postOpt simplifyTimeIndepFuncCalls (simulation): time 0.001361/7.375, allocations: 21.53 kB / 3.478 GB, free: 107 MB / 0.6178 GB
Notification: Performance of postOpt simplifyAllExpressions (simulation): time 0.004243/7.38, allocations: 147.4 kB / 3.478 GB, free: 106.9 MB / 0.6178 GB
Notification: Performance of postOpt findZeroCrossings (simulation): time 0.0007618/7.38, allocations: 138.8 kB / 3.478 GB, free: 106.9 MB / 0.6178 GB
Notification: Performance of postOpt collapseArrayExpressions (simulation): time 0.0005929/7.381, allocations: 105.1 kB / 3.478 GB, free: 106.9 MB / 0.6178 GB
Notification: Performance of sort global known variables: time 0.005042/7.386, allocations: 2.132 MB / 3.48 GB, free: 106.8 MB / 0.6178 GB
Notification: Performance of remove unused functions: time 0.01021/7.396, allocations: 2.269 MB / 3.482 GB, free: 106.6 MB / 0.6178 GB
Notification: Performance of Backend phase and start with SimCode phase: time 0.003313/7.4, allocations: 1.675 MB / 3.484 GB, free: 106.4 MB / 0.6178 GB
Notification: Performance of simCode: created initialization part: time 0.01511/7.415, allocations: 6.037 MB / 3.49 GB, free: 105.6 MB / 0.6178 GB
Notification: Performance of simCode: created event and clocks part: time 1.031e-05/7.415, allocations: 3.125 kB / 3.49 GB, free: 105.6 MB / 0.6178 GB
Notification: Performance of simCode: created simulation system equations: time 0.004318/7.419, allocations: 1.709 MB / 3.492 GB, free: 105.4 MB / 0.6178 GB
Notification: Performance of simCode: created of all other equations (e.g. parameter, nominal, assert, etc): time 0.0102/7.43, allocations: 1.595 MB / 3.493 GB, free: 105.4 MB / 0.6178 GB
Notification: Performance of simCode: created linear, non-linear and system jacobian parts: time 0.02141/7.451, allocations: 7.081 MB / 3.5 GB, free: 104.1 MB / 0.6178 GB
Notification: Performance of simCode: all other stuff during SimCode phase: time 0.00799/7.459, allocations: 3.264 MB / 3.503 GB, free: 103.3 MB / 0.6178 GB
Notification: Performance of SimCode: time 1.446e-06/7.459, allocations: 0 / 3.503 GB, free: 103.3 MB / 0.6178 GB
Notification: Performance of Templates: time 0.2188/7.678, allocations: 98.01 MB / 3.599 GB, free: 67.93 MB / 0.6178 GB